chore: Format markdown with prettier

[eps1lon]

Thought I propose something uncontroversial as my first direct contribution 😉

This is mostly about the codeblocks. It will come in handy once eslint-plugin-markdown can handle tsx? codeblocks and then we'll be able to typecheck the codeblocks (did hack something together locally which already revealed some issues; will propose fixes separately).

Edit: It will not catch syntax error: f0b3cfd, see prettier/prettier#6010

No strong opinions about how we maintain the formatting from me. Maybe discuss this in a separate issue? PRs are rare enough that manual verification is probably sufficient.

Edit2:
Used prettier configuration:

"prettier": {
  "singleQuote": true
}

[ferdaber]

I always like Prettier

[eps1lon]

@sw-yx Is that ok for you? I think we should all be on the same page for this. Especially concerning the prettier configuration.

[swyxio]

yes absolutely. sorry ive just been busy past couple days 😅

[swyxio]

i have also added https://github.com/kevgo/prettifier as a github app, i have never used it before but hopefully it works

[eps1lon]

i have also added kevgo/prettifier as a github app, i have never used it before but hopefully it works

Didn't know that one. That's IMO way better than some CI yelling at you.

I [tried something with Github actions but it didn't work.