Merge branch 'patch/gpg-doc' into 'master'

Fix indentation in GPG documentation

See merge request gitlab-org/gitlab-ce!22132

doc/user/project/repository/gpg_signed_commits/index.md

@@ -57,7 +57,7 @@ started:
     gpg --full-gen-key
     ```
     
-_NOTE: In some cases like Gpg4win on Windows and other Mac OS versions the command here may be ` gpg --gen-key`_
+    _NOTE: In some cases like Gpg4win on Windows and other Mac OS versions the command here may be ` gpg --gen-key`_
 
     This will spawn a series of questions.