We've started to lint our Markdown files with Prettier, and Prettier overwrites some of the changes applied by this tool. So far, I've confirmed:

• Unreleased links
  • Prettier: [unreleased]:
  • This tool: [Unreleased]:

Related: In #39 I had a malformed Unrelreased URL. I also though the lowercasing of the first letter was an error, but that was actually due to me running yarn lint:fix, which ran prettier on my Markdown files.