text: Title: Misc documentation cleanup
  Body: Documentation improvements and tweaks that are not highest prio, but would be nice to iron out:
  - [ ] https://falcon.readthedocs.io/en/latest/community/contributing.html#reviews :arrow_left: checkboxes within use the GitHub flavour of Markdown, which does not render exactly the same in the MyST Markdown flavour that Sphinx uses. Check if there is a suitable plugin, or, in the worst case, just convert `CONTRIBUTING.md` to ordinary bullet lists.