Merge branch '52512-fix-event-api-docs' into 'master'

Fix the event API docs

Closes #52512

See merge request gitlab-org/gitlab-ce!22320

doc/api/events.md

@@ -71,7 +71,7 @@ Parameters:
 Example request:
 
 ```
-curl --header "PRIVATE-TOKEN 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/events&target_type=issue&action=created&after=2017-01-31&before=2017-03-01
+curl --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/events&target_type=issue&action=created&after=2017-01-31&before=2017-03-01
 ```
 
 Example response:
@@ -276,7 +276,7 @@ Parameters:
 Example request:
 
 ```
-curl --header "PRIVATE-TOKEN 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/projects/:project_id/events&target_type=issue&action=created&after=2017-01-31&before=2017-03-01
+curl --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/projects/:project_id/events&target_type=issue&action=created&after=2017-01-31&before=2017-03-01
 ```
 
 Example response: