Update documentation

Update documentation

doc/api/issues.md

@@ -523,7 +523,7 @@ If the user is already subscribed to the issue, the status code `304`
 is returned.
 
 ```
-POST /projects/:id/issues/:issue_id/subscription
+POST /projects/:id/issues/:issue_id/subscribe
 ```
 
 | Attribute | Type | Required | Description |
@@ -532,7 +532,7 @@ POST /projects/:id/issues/:issue_id/subscription
 | `issue_id` | integer | yes | The ID of a project's issue |
 
 ```bash
-curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/issues/93/subscription
+curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/issues/93/subscribe
 ```
 
 Example response:
@@ -579,7 +579,7 @@ from it. If the user is not subscribed to the issue, the
 status code `304` is returned.
 
 ```
-DELETE /projects/:id/issues/:issue_id/subscription
+POST /projects/:id/issues/:issue_id/unsubscribe
 ```
 
 | Attribute | Type | Required | Description |
@@ -588,7 +588,7 @@ DELETE /projects/:id/issues/:issue_id/subscription
 | `issue_id` | integer | yes | The ID of a project's issue |
 
 ```bash
-curl --request DELETE --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/issues/93/subscription
+curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/issues/93/unsubscribe
 ```
 
 Example response:

doc/api/labels.md

@@ -193,7 +193,7 @@ If the user is already subscribed to the label, the status code `304`
 is returned.
 
 ```
-POST /projects/:id/labels/:label_id/subscription
+POST /projects/:id/labels/:label_id/subscribe
 ```
 
 | Attribute  | Type              | Required | Description                          |
@@ -202,7 +202,7 @@ POST /projects/:id/labels/:label_id/subscription
 | `label_id` | integer or string | yes      | The ID or title of a project's label |
 
 ```bash
-curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/labels/1/subscription
+curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/labels/1/subscribe
 ```
 
 Example response:
@@ -228,7 +228,7 @@ from it. If the user is not subscribed to the label, the
 status code `304` is returned.
 
 ```
-DELETE /projects/:id/labels/:label_id/subscription
+POST /projects/:id/labels/:label_id/unsubscribe
 ```
 
 | Attribute  | Type              | Required | Description                          |
@@ -237,7 +237,7 @@ DELETE /projects/:id/labels/:label_id/subscription
 | `label_id` | integer or string | yes      | The ID or title of a project's label |
 
 ```bash
-curl --request DELETE --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/labels/1/subscription
+curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/labels/1/unsubscribe
 ```
 
 Example response:

doc/api/merge_requests.md

@@ -810,7 +810,7 @@ Subscribes the authenticated user to a merge request to receive notification. If
 status code `304` is returned.
 
 ```
-POST /projects/:id/merge_requests/:merge_request_id/subscription
+POST /projects/:id/merge_requests/:merge_request_id/subscribe
 ```
 
 | Attribute | Type | Required | Description |
@@ -819,7 +819,7 @@ POST /projects/:id/merge_requests/:merge_request_id/subscription
 | `merge_request_id` | integer | yes   | The ID of the merge request |
 
 ```bash
-curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/merge_requests/17/subscription
+curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/merge_requests/17/subscribe
 ```
 
 Example response:
@@ -884,7 +884,7 @@ notifications from that merge request. If the user is
 not subscribed to the merge request, the status code `304` is returned.
 
 ```
-DELETE /projects/:id/merge_requests/:merge_request_id/subscription
+POST /projects/:id/merge_requests/:merge_request_id/subscribe
 ```
 
 | Attribute | Type | Required | Description |
@@ -893,7 +893,7 @@ DELETE /projects/:id/merge_requests/:merge_request_id/subscription
 | `merge_request_id` | integer | yes   | The ID of the merge request |
 
 ```bash
-curl --request DELETE --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/merge_requests/17/subscription
+curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v3/projects/5/merge_requests/17/subscribe
 ```
 
 Example response: