gitlab_markdown_helper: fix relative links in other formats
The RelativeLinkFilter was not applied to other document formats, e.g., reStructuredText, so links from the Files view or the Project view did not work.
Fixes #3533 (closed).
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
The RelativeLinkFilter was not applied to other document formats, e.g., reStructuredText, so links from the Files view or the Project view did not work.
Fixes #3533 (closed).