Merge branch 'patch-3' into 'master'

"This file is managed by gitlab-ctl. Manual changes will be erased!"

## What does this MR do?

This merge request replaces the word "gitlab.yml" with the word "gitlab.rb" in one section of the admin area.

## Are there points in the code the reviewer needs to double check?

No.

## Why was this MR needed?

Configuration is no longer done in gitlab.yml, which is overwritten by gitlab-ctl.

## What are the relevant issue numbers?

None.

## Screenshots (if relevant)



## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [x] All builds are passing
- [X] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [X] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [X] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5600

CHANGELOG

@@ -36,6 +36,7 @@ v 8.11.0 (unreleased)
   - Optimize checking if a user has read access to a list of issues !5370
   - Nokogiri's various parsing methods are now instrumented
   - Add simple identifier to public SSH keys (muteor)
+  - Admin page now references docs instead of a specific file !5600 (AnAverageHuman)
   - Add a way to send an email and create an issue based on private personal token. Find the email address from issues page. !3363
   - Fix filter input alignment (ClemMakesApps)
   - Include old revision in merge request update hooks (Ben Boeckel)

app/views/admin/application_settings/_form.html.haml

@@ -366,7 +366,9 @@
       .col-sm-10
         = f.select :repository_storage, repository_storage_options_for_select, {}, class: 'form-control'
         .help-block
-          You can manage the repository storage paths in your gitlab.yml configuration file
+          Manage repository storage paths. Learn more in the
+          = succeed "." do
+            = link_to "repository storages documentation", help_page_path("administration/repository_storages")
 
   %fieldset
     %legend Repository Checks