Simplify MR index even further

doc/user/project/merge_requests/creating_merge_requests.md

@@ -175,7 +175,7 @@ list.
 
 ![Merge request diff file navigation](img/merge_request_diff_file_navigation.png)
 
-#### Incrementally expand merge request diffs
+### Incrementally expand merge request diffs
 
 By default, the diff shows only the parts of a file which are changed.
 To view more unchanged lines above or below a change click on the

doc/user/project/merge_requests/reviewing_and_managing_merge_requests.md

@@ -6,7 +6,7 @@ type: index, reference
 
 Merge requests are the primary method of making changes to files in a GitLab project.
 Changes are proposed by [creating and submitting a merge request](creating_merge_requests.md),
-which is then reviewed, and accepted (or rejected), all within GitLab.
+which is then reviewed, and accepted (or rejected).
 
 ## View project merge requests