docs: add an anchor on every linter

[ccoVeille]

This will help to link linters without settings

Fixes #4841

[ccoVeille]

This implementation is VERY NAIVE and should be considered as Proof of Concept.

It's likely to be incomplete and would request to review and iterate.

For example:

• the anchor icon is missing also is the css. I tried but I failed to find how. I'm backend after all :sweat_smile:
• having some link that point to the linter settings and some other to the linter description seems a bad idea.

[ldez]

This approach cannot work because it will create duplicate IDs, so the links on linters with settings will not work.

I created a PR with a working approach: #4843

[ccoVeille]

This approach cannot work because it will create duplicate IDs, so the links on linters with settings will not work.

I created a PR with a working approach: #4843

I don't think my code was creating duplicate it, but never mind I'm glad you opened something better than my PR to fix the issue I reported