Add *.rst glob pattern to defaults

[kdeldycke]

Lychee is advertising its capability of checking reStructuredText files, so I guess it is a good idea to add these files to the default glob pattern.

[mre]

Hey Kevin, great idea!

Code looks good.
Could you also add an example fixtures/TEST.rst file with some links and add a test like this? (Ideally, we'd want to check the links it found in the tests as well, but at the moment we only test the lychee invocation.)

[kdeldycke]

Could you also add an example fixtures/TEST.rst file with some links and add a test like this? (Ideally, we'd want to check the links it found in the tests as well, but at the moment we only test the lychee invocation.)

Done!

Is that good to you? Can you approve the workflow run on that PR so we can check everything's fine?

[mre]

You got it.

[kdeldycke]

Thanks @mre for the fast merge and feedback!