Update epic_links.md

doc/api/epic_links.md

@@ -80,7 +80,7 @@ POST /groups/:id/epics/:epic_iid/epics
 | `child_epic_id` | integer        | yes      | The global ID of the child epic. Internal ID can't be used because they can conflict with epics from other groups. |
 
 ```shell
-curl --header POST "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics/5/epics/6
+curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics/5/epics/6
 ```
 
 Example response:
@@ -133,7 +133,7 @@ POST /groups/:id/epics/:epic_iid/epics
 | `title`         | string         | yes      | The title of a newly created epic. |
 
 ```shell
-curl --header POST "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics/5/epics?title=Newpic
+curl --request POST --header  "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics/5/epics?title=Newpic
 ```
 
 Example response:
@@ -168,7 +168,7 @@ PUT /groups/:id/epics/:epic_iid/epics/:child_epic_id
 | `move_after_id`  | integer        | no       | The global ID of a sibling epic that should be placed after the child epic.                                        |
 
 ```shell
-curl --header PUT "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics/4/epics/5
+curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics/4/epics/5
 ```
 
 Example response:
@@ -223,7 +223,7 @@ DELETE /groups/:id/epics/:epic_iid/epics/:child_epic_id
 | `child_epic_id` | integer        | yes      | The global ID of the child epic. Internal ID can't be used because they can conflict with epics from other groups. |
 
 ```shell
-curl --header DELETE "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics/4/epics/5
+curl --request DELETE --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/1/epics/4/epics/5
 ```
 
 Example response: