Link
Git wiki documentation in native drupal help pages
In last projects, here in communia we are using more and more the gitlab suite tools that are offering many free software projects. Calling projects for their own name: kde with its https://invent.kde.org , freedesktop with its https://gitlab.freedesktop.org , and where we are more active; https://gitlab.com and drupalcode.org https://git.drupalcode.org .
The schema that we are using is a broader group that includes the drupal recommended project and also where we are including the custom modules, themes, issues, and the wiki documentation. This way we can attach project references to each page, and also the wiki is part of the whole project system.