Explain how to enable Markdown formatting for pre-commit hook

[mkniewallner]

Summary

When running Ruff through pre-commit, since types_or does not include markdown, Markdown files are not included. I believe it could be useful to indicate what needs be done in that case.

We could also set markdown to ruff-format hook, but we probably don't want to do that until the feature is stable?

Test Plan

Tested the hook locally on a project using Markdown files.

For the documentation, checked it locally:

[ntBre]

Thank you! I had one concern about the version field, but this seems great to have.

[ntBre]

I'm not that familiar with pre-commit, but is it possible to use something like latest here or omit the rev field? I'm just afraid that it will quickly become outdated.

We could instead add this file to the list of files updated in releases:

ruff/pyproject.toml

Line 118 in f055f39

version_files = [

but I'd want to remember to remove it if we add this directly to the hook after stabilization, as you said.

[mkniewallner]

Ah I misremembered and thought we automatically included all files in docs directory!