Changes to Repository docs for SSOT epic

Content about Repository was edited to comply with
docs standards. This is part of a SSOT epic.

- Added standard elements to each file.
- Moved content on Branches, and Compare, to the
  Branches file.
- Added a brief introduction piece to the GPG
  content.
- Lightly edited all content to improve clarity.

1 files changed, 16 insertions, 0 deletions

diff --git a/doc/user/project/repository/reducing_the_repo_size_using_git.md b/doc/user/project/repository/reducing_the_repo_size_using_git.md
index 7c711bc0b3b..3adf66e4b6f 100644
--- a/doc/user/project/repository/reducing_the_repo_size_using_git.md
+++ b/doc/user/project/repository/reducing_the_repo_size_using_git.md
@@ -1,3 +1,7 @@
+---
+type: howto
+---
+
 # Reducing the repository size using Git
 
 A GitLab Enterprise Edition administrator can set a [repository size limit](../../admin_area/settings/account_and_limit_settings.md)
@@ -139,3 +143,15 @@ purposes!
    ```
 
 Your repository should now be below the size limit.
+
+<!-- ## Troubleshooting
+
+Include any troubleshooting steps that you can foresee. If you know beforehand what issues
+one might have when setting this up, or when something is changed, or on upgrading, it's
+important to describe those, too. Think of things that may go wrong and include them here.
+This is important to minimize requests for support, and to avoid doc comments with
+questions that you know someone might ask.
+
+Each scenario can be a third-level heading, e.g. `### Getting error message X`.
+If you have none to add when creating a doc, leave this section in place
+but commented out to help encourage others to add to it in the future. -->