Fix broken link in the contributing documentation
Problem/Motivation
Broken links in:
* https://project.pages.drupalcode.org/gitlab_templates/help/help/ ==> contribute + documentation
* https://project.pages.drupalcode.org/gitlab_templates/help/contributing/ ==> templates version
None of the links are broken here https://project.pages.drupalcode.org/gitlab_templates/, but maybe it's worth having them start with "/" (which I assume will be the fix) to keep all internal links in the same format?
Proposed resolution
Fix the links.
Edited by drupalbot