Relative Links in the Wiki Are Broken
- [ ] #16568 (!4050) Relative links in wiki are broken
- [x] Investigate issue
- [x] Implementation / Fix
- [x] Write (failing) tests for `WikiLinkFilter`
- [x] Link to `./bar` should either get rewritten correctly or left alone
- [x] Link to `./bar.md` should maybe get rewritten correctly (is left alone currently)
- [x] Link to `bar.md` should get rewritten correctly
- [x] Check if this indeed a bug
- [x] Make sure CI is green
- [x] Assign to endboss
- [x] Wait for review
- [x] Implement review feedback
- [ ] Wait for merge
See merge request !4050