Merge pull request github#20364 from github/repo-sync

repo sync

Author: Octomerger

content/get-started/getting-started-with-git/configuring-git-to-handle-line-endings.md

@@ -15,6 +15,7 @@ versions:
   ghae: '*'
 shortTitle: Handle line endings
 ---
+## About line endings
 Every time you press <kbd>return</kbd> on your keyboard you insert an invisible character called a line ending. Different operating systems handle line endings differently.
 
 When you're collaborating on projects with Git and {% data variables.product.product_name %}, Git might produce unexpected results if, for example, you're working on a Windows machine, and your collaborator has made a change in macOS.

content/get-started/getting-started-with-git/setting-your-username-in-git.md

@@ -12,6 +12,7 @@ versions:
   ghae: '*'
 shortTitle: Set your username
 ---
+## About Git usernames
 You can change the name that is associated with your Git commits using the `git config` command. The new name you set will be visible in any future commits you push to {% data variables.product.product_name %} from the command line. If you'd like to keep your real name private, you can use any text as your Git username.
 
 Changing the name associated with your Git commits using `git config` will only affect future commits and will not change the name used for past commits.

content/get-started/using-git/pushing-commits-to-a-remote-repository.md

@@ -13,6 +13,7 @@ versions:
   ghae: '*'
 shortTitle: Push commits to a remote
 ---
+## About `git push`
 The `git push` command takes two arguments:
 
 * A remote name, for example, `origin`