Docs: Update more API code blocks

The code blocks for each API call on these pages did not specify a
code style. While they're HTTP requests, they don't match the
format the lexer expects, so I think 'plaintext' is a better choice.

doc/api/merge_request_context_commits.md

@@ -4,7 +4,7 @@
 
 Get a list of merge request context commits.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/context_commits
 ```
 
@@ -36,7 +36,7 @@ Parameters:
 
 Create a list of merge request context commits.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/context_commits
 ```
 
@@ -45,7 +45,7 @@ Parameters:
 - `id` (required) - The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) owned by the authenticated user
 - `merge_request_iid` (required) - The internal ID of the merge request
 
-```
+```plaintext
 POST /projects/:id/merge_requests/
 ```
 
@@ -75,7 +75,7 @@ POST /projects/:id/merge_requests/
 
 Delete a list of merge request context commits.
 
-```
+```plaintext
 DELETE /projects/:id/merge_requests/:merge_request_iid/context_commits
 ```
 

doc/api/merge_requests.md

@@ -23,7 +23,7 @@ given state (`opened`, `closed`, `locked`, or `merged`) or all of them (`all`).
 The pagination parameters `page` and `per_page` can be used to
 restrict the list of merge requests.
 
-```
+```plaintext
 GET /merge_requests
 GET /merge_requests?state=opened
 GET /merge_requests?state=all
@@ -190,7 +190,7 @@ Get all merge requests for this project.
 The `state` parameter can be used to get only merge requests with a given state (`opened`, `closed`, `locked`, or `merged`) or all of them (`all`).
 The pagination parameters `page` and `per_page` can be used to restrict the list of merge requests.
 
-```
+```plaintext
 GET /projects/:id/merge_requests
 GET /projects/:id/merge_requests?state=opened
 GET /projects/:id/merge_requests?state=all
@@ -361,7 +361,7 @@ Get all merge requests for this group and its subgroups.
 The `state` parameter can be used to get only merge requests with a given state (`opened`, `closed`, `locked`, or `merged`) or all of them (`all`).
 The pagination parameters `page` and `per_page` can be used to restrict the list of merge requests.
 
-```
+```plaintext
 GET /groups/:id/merge_requests
 GET /groups/:id/merge_requests?state=opened
 GET /groups/:id/merge_requests?state=all
@@ -524,7 +524,7 @@ integer. This is because when an MR has too many changes to display and store,
 it will be capped at 1,000. In that case, the API will return the string
 `"1000+"` for the changes count.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid
 ```
 
@@ -683,7 +683,7 @@ the `approvals_before_merge` parameter:
 
 Get a list of merge request participants.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/participants
 ```
 
@@ -717,7 +717,7 @@ Parameters:
 
 Get a list of merge request commits.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/commits
 ```
 
@@ -753,7 +753,7 @@ Parameters:
 
 Shows information about the merge request including its files and changes.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/changes
 ```
 
@@ -864,7 +864,7 @@ Parameters:
 
 Get a list of merge request pipelines.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/pipelines
 ```
 
@@ -896,7 +896,7 @@ The new pipeline can be:
 - A [pipeline for merged results](../ci/merge_request_pipelines/pipelines_for_merged_results/index.md)
   if the [project setting is enabled](../ci/merge_request_pipelines/pipelines_for_merged_results/index.md#enabling-pipelines-for-merged-results).
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/pipelines
 ```
 
@@ -948,7 +948,7 @@ Parameters:
 
 Creates a new merge request.
 
-```
+```plaintext
 POST /projects/:id/merge_requests
 ```
 
@@ -1105,7 +1105,7 @@ the `approvals_before_merge` parameter:
 
 Updates an existing merge request. You can change the target branch, title, or even close the MR.
 
-```
+```plaintext
 PUT /projects/:id/merge_requests/:merge_request_iid
 ```
 
@@ -1264,7 +1264,7 @@ the `approvals_before_merge` parameter:
 
 Only for admins and project owners. Deletes the merge request in question.
 
-```
+```plaintext
 DELETE /projects/:id/merge_requests/:merge_request_iid
 ```
 
@@ -1289,7 +1289,7 @@ If the `sha` parameter is passed and does not match the HEAD of the source - you
 
 If you don't have permissions to accept this merge request - you'll get a `401`
 
-```
+```plaintext
 PUT /projects/:id/merge_requests/:merge_request_iid/merge
 ```
 
@@ -1450,7 +1450,7 @@ If the merge request has conflicts, is empty or already merged, you'll get a `40
 
 It returns the HEAD commit of `refs/merge-requests/:iid/merge` in the response body in case of `200`.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/merge_ref
 ```
 
@@ -1473,7 +1473,7 @@ If the merge request is already merged or closed - you get `405` and error messa
 
 In case the merge request is not set to be merged when the pipeline succeeds, you'll also get a `406` error.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/cancel_merge_when_pipeline_succeeds
 ```
 
@@ -1621,7 +1621,7 @@ Automatically rebase the `source_branch` of the merge request against its
 If you don't have permissions to push to the merge request's source branch -
 you'll get a `403 Forbidden` response.
 
-```
+```plaintext
 PUT /projects/:id/merge_requests/:merge_request_iid/rebase
 ```
 
@@ -1684,7 +1684,7 @@ Comments are done via the [notes](notes.md) resource.
 
 Get all the issues that would be closed by merging the provided merge request.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/closes_issues
 ```
 
@@ -1760,7 +1760,7 @@ Example response when an external issue tracker (e.g. Jira) is used:
 Subscribes the authenticated user to a merge request to receive notification. If the user is already subscribed to the merge request, the
 status code `304` is returned.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/subscribe
 ```
 
@@ -1911,7 +1911,7 @@ Unsubscribes the authenticated user from a merge request to not receive
 notifications from that merge request. If the user is
 not subscribed to the merge request, the status code `304` is returned.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/unsubscribe
 ```
 
@@ -2062,7 +2062,7 @@ Manually creates a todo for the current user on a merge request.
 If there already exists a todo for the user on that merge request,
 status code `304` is returned.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/todo
 ```
 
@@ -2179,7 +2179,7 @@ Example response:
 
 Get a list of merge request diff versions.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/versions
 ```
 
@@ -2220,7 +2220,7 @@ Example response:
 
 Get a single merge request diff version.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/versions/:version_id
 ```
 
@@ -2288,7 +2288,7 @@ Example response:
 
 Sets an estimated time of work for this merge request.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/time_estimate
 ```
 
@@ -2317,7 +2317,7 @@ Example response:
 
 Resets the estimated time for this merge request to 0 seconds.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/reset_time_estimate
 ```
 
@@ -2345,7 +2345,7 @@ Example response:
 
 Adds spent time for this merge request
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/add_spent_time
 ```
 
@@ -2374,7 +2374,7 @@ Example response:
 
 Resets the total spent time for this merge request to 0 seconds.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/reset_spent_time
 ```
 
@@ -2400,7 +2400,7 @@ Example response:
 
 ## Get time tracking stats
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/time_stats
 ```
 

doc/api/milestones.md

@@ -4,7 +4,7 @@
 
 Returns a list of project milestones.
 
-```
+```plaintext
 GET /projects/:id/milestones
 GET /projects/:id/milestones?iids[]=42
 GET /projects/:id/milestones?iids[]=42&iids[]=43
@@ -51,7 +51,7 @@ Example Response:
 
 Gets a single project milestone.
 
-```
+```plaintext
 GET /projects/:id/milestones/:milestone_id
 ```
 
@@ -64,7 +64,7 @@ Parameters:
 
 Creates a new project milestone.
 
-```
+```plaintext
 POST /projects/:id/milestones
 ```
 
@@ -80,7 +80,7 @@ Parameters:
 
 Updates an existing project milestone.
 
-```
+```plaintext
 PUT /projects/:id/milestones/:milestone_id
 ```
 
@@ -98,7 +98,7 @@ Parameters:
 
 Only for users with Developer access to the project.
 
-```
+```plaintext
 DELETE /projects/:id/milestones/:milestone_id
 ```
 
@@ -111,7 +111,7 @@ Parameters:
 
 Gets all issues assigned to a single project milestone.
 
-```
+```plaintext
 GET /projects/:id/milestones/:milestone_id/issues
 ```
 
@@ -124,7 +124,7 @@ Parameters:
 
 Gets all merge requests assigned to a single project milestone.
 
-```
+```plaintext
 GET /projects/:id/milestones/:milestone_id/merge_requests
 ```
 
@@ -139,7 +139,7 @@ Parameters:
 
 Only for users with Developer access to the group.
 
-```
+```plaintext
 POST /projects/:id/milestones/:milestone_id/promote
 ```
 
@@ -154,7 +154,7 @@ Parameters:
 
 Gets all burndown chart events for a single milestone.
 
-```
+```plaintext
 GET /projects/:id/milestones/:milestone_id/burndown_events
 ```
 

doc/api/namespaces.md

@@ -12,7 +12,7 @@ For users and groups supported API calls see the [users](users.md) and
 Get a list of the namespaces of the authenticated user. If the user is an
 administrator, a list of all namespaces in the GitLab instance is shown.
 
-```
+```plaintext
 GET /namespaces
 ```
 
@@ -74,7 +74,7 @@ NOTE: **Note:** Only group maintainers/owners are presented with `members_count_
 
 Get all namespaces that match a string in their name or path.
 
-```
+```plaintext
 GET /namespaces?search=foobar
 ```
 
@@ -108,7 +108,7 @@ Example response:
 
 Get a namespace by ID.
 
-```
+```plaintext
 GET /namespaces/:id
 ```
 

doc/api/notes.md

@@ -22,7 +22,7 @@ Read more on [pagination](README.md#pagination).
 
 Gets a list of all notes for a single issue.
 
-```
+```plaintext
 GET /projects/:id/issues/:issue_iid/notes
 GET /projects/:id/issues/:issue_iid/notes?sort=asc&order_by=updated_at
 ```
@@ -87,7 +87,7 @@ curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/ap
 
 Returns a single note for a specific project issue
 
-```
+```plaintext
 GET /projects/:id/issues/:issue_iid/notes/:note_id
 ```
 
@@ -105,7 +105,7 @@ curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/ap
 
 Creates a new note to a single project issue.
 
-```
+```plaintext
 POST /projects/:id/issues/:issue_iid/notes
 ```
 
@@ -124,7 +124,7 @@ curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab
 
 Modify existing note of an issue.
 
-```
+```plaintext
 PUT /projects/:id/issues/:issue_iid/notes/:note_id
 ```
 
@@ -143,7 +143,7 @@ curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.
 
 Deletes an existing note of an issue.
 
-```
+```plaintext
 DELETE /projects/:id/issues/:issue_iid/notes/:note_id
 ```
 
@@ -165,7 +165,7 @@ curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" https://gitl
 
 Gets a list of all notes for a single snippet. Snippet notes are comments users can post to a snippet.
 
-```
+```plaintext
 GET /projects/:id/snippets/:snippet_id/notes
 GET /projects/:id/snippets/:snippet_id/notes?sort=asc&order_by=updated_at
 ```
@@ -185,7 +185,7 @@ curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/ap
 
 Returns a single note for a given snippet.
 
-```
+```plaintext
 GET /projects/:id/snippets/:snippet_id/notes/:note_id
 ```
 
@@ -223,7 +223,7 @@ curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/ap
 Creates a new note for a single snippet. Snippet notes are comments users can post to a snippet.
 If you create a note where the body only contains an Award Emoji, you'll receive this object back.
 
-```
+```plaintext
 POST /projects/:id/snippets/:snippet_id/notes
 ```
 
@@ -242,7 +242,7 @@ curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab
 
 Modify existing note of a snippet.
 
-```
+```plaintext
 PUT /projects/:id/snippets/:snippet_id/notes/:note_id
 ```
 
@@ -261,7 +261,7 @@ curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.
 
 Deletes an existing note of a snippet.
 
-```
+```plaintext
 DELETE /projects/:id/snippets/:snippet_id/notes/:note_id
 ```
 
@@ -283,7 +283,7 @@ curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" https://gitl
 
 Gets a list of all notes for a single merge request.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/notes
 GET /projects/:id/merge_requests/:merge_request_iid/notes?sort=asc&order_by=updated_at
 ```
@@ -303,7 +303,7 @@ curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/ap
 
 Returns a single note for a given merge request.
 
-```
+```plaintext
 GET /projects/:id/merge_requests/:merge_request_iid/notes/:note_id
 ```
 
@@ -346,7 +346,7 @@ Creates a new note for a single merge request.
 If you create a note where the body only contains an Award Emoji, you'll receive
 this object back.
 
-```
+```plaintext
 POST /projects/:id/merge_requests/:merge_request_iid/notes
 ```
 
@@ -361,7 +361,7 @@ Parameters:
 
 Modify existing note of a merge request.
 
-```
+```plaintext
 PUT /projects/:id/merge_requests/:merge_request_iid/notes/:note_id
 ```
 
@@ -380,7 +380,7 @@ curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.
 
 Deletes an existing note of a merge request.
 
-```
+```plaintext
 DELETE /projects/:id/merge_requests/:merge_request_iid/notes/:note_id
 ```
 
@@ -402,7 +402,7 @@ curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" https://gitl
 
 Gets a list of all notes for a single epic. Epic notes are comments users can post to an epic.
 
-```
+```plaintext
 GET /groups/:id/epics/:epic_id/notes
 GET /groups/:id/epics/:epic_id/notes?sort=asc&order_by=updated_at
 ```
@@ -422,7 +422,7 @@ curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/ap
 
 Returns a single note for a given epic.
 
-```
+```plaintext
 GET /groups/:id/epics/:epic_id/notes/:note_id
 ```
 
@@ -462,7 +462,7 @@ curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/ap
 Creates a new note for a single epic. Epic notes are comments users can post to an epic.
 If you create a note where the body only contains an Award Emoji, you'll receive this object back.
 
-```
+```plaintext
 POST /groups/:id/epics/:epic_id/notes
 ```
 
@@ -482,7 +482,7 @@ curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab
 
 Modify existing note of an epic.
 
-```
+```plaintext
 PUT /groups/:id/epics/:epic_id/notes/:note_id
 ```
 
@@ -503,7 +503,7 @@ curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.
 
 Deletes an existing note of an epic.
 
-```
+```plaintext
 DELETE /groups/:id/epics/:epic_id/notes/:note_id
 ```
 

doc/api/notification_settings.md

@@ -6,7 +6,7 @@
 
 The notification levels are defined in the `NotificationSetting.level` model enumeration. Currently, these levels are recognized:
 
-```
+```plaintext
 disabled
 participating
 watch
@@ -37,7 +37,7 @@ If the `custom` level is used, specific email events can be controlled. Availabl
 
 Get current notification settings and email address.
 
-```
+```plaintext
 GET /notification_settings
 ```
 
@@ -58,7 +58,7 @@ Example response:
 
 Update current notification settings and email address.
 
-```
+```plaintext
 PUT /notification_settings
 ```
 
@@ -99,7 +99,7 @@ Example response:
 
 Get current group or project notification settings.
 
-```
+```plaintext
 GET /groups/:id/notification_settings
 GET /projects/:id/notification_settings
 ```
@@ -125,7 +125,7 @@ Example response:
 
 Update current group/project notification settings.
 
-```
+```plaintext
 PUT /groups/:id/notification_settings
 PUT /projects/:id/notification_settings
 ```