Reconsider requirement for markdown links to be urlencoded

Ugh. It turns out urlencoded Links actually work in DT. What doesn’t work is leaving out the extension:

  • This works: [2020-02-10 - FacileThings](2020-02-10%20-%20facilethings.md)
  • This does not: [2020-02-10 - FacileThings](2020-02-10%20-%20facilethings)

This seems to be related to this bug: Updating Internal Links: Removes File Extension When Using Markdown Links

Nonetheless, the readability would still be improved.

Apologies for the mess.