changes " usage to '

Gemfile

@@ -52,7 +52,7 @@ gem 'browser', '~> 2.2'
 
 # Extracting information from a git repository
 # Provide access to Gitlab::Git library
-gem "gitlab_git", '~> 10.2'
+gem 'gitlab_git', '~> 10.2'
 
 # LDAP Auth
 # GitLab fork with several improvements to original library. For full list of changes