Merge branch 'sselhorn-master-patch-15186' into 'master'

Changed "a" to "the" so it would be more specific

See merge request gitlab-org/gitlab!76774

doc/development/documentation/structure.md

@@ -88,7 +88,7 @@ Create an issue when you want to track bugs or future work.
 
 Prerequisites:
 
-- You must have at least the Developer role for a project.
+- You must have at least the Developer role for the project.
 
 To create an issue: