Merge branch 'patch-28' into 'master'

Add a note about the "List MR pipelines" endpoint only being available from 10.5.0

See merge request gitlab-org/gitlab-ce!17375

doc/api/merge_requests.md

@@ -494,6 +494,8 @@ Parameters:
 
 ## List MR pipelines
 
+> [Introduced][ce-15454] in GitLab 10.5.0.
+
 Get a list of merge request pipelines.
 
 ```
@@ -1449,3 +1451,4 @@ Example response:
 
 [ce-13060]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/13060
 [ce-14016]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/14016
+[ce-15454]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/15454