Missing dot.

config/gitlab.yml.example

@@ -66,7 +66,7 @@ production: &base
     # If a commit message matches this regular expression, all issues referenced from the matched text will be closed.
     # This happens when the commit is pushed or merged into the default branch of a project.
     # When not specified the default issue_closing_pattern as specified below will be used.
-    # Tip: you can test your closing pattern at http://rubular.com
+    # Tip: you can test your closing pattern at http://rubular.com.
     # issue_closing_pattern: '((?:[Cc]los(?:e[sd]?|ing)|[Ff]ix(?:e[sd]|ing)?) +(?:(?:issues? +)?#\d+(?:(?:, *| +and +)?))+)'
 
     ## Default project features settings