Suggested update to git workflow

As a final step when finishing a pull request, the feature/bugfix/enhancement should be added to the release draft document. Look at the drafts "Trigger and action" or the draft for more info.

doc/git-workflow/git_workflow.md

@@ -83,6 +83,9 @@ Once you have had enough people review it, you are confident in the code you hav
 11. Merge the pull request into the **staging** or **feature** branch, and then delete it on github.
 12. Run applicable test again on the merged code.
 
+### Add changes to release Draft
+Go to [releases](https://github.com/RI-SE/Maestro/releases) and add your pull request to the current release draft. If the change warrants it increase the version numer. 
+
 #
 
 ## Additional stuff and resources