Added supporting any heading level from markdown

[igor-morev]

@RomanHotsiy I have markdown documents. These have a lot of different level headings. Currently, Redoc supports only 1 and 2 level headings with anchor's links. I need more up to 6.

Testing

Screenshots (optional)

Check yourself

• [ ] Code is linted
• [ ] Tested
• [ ] All new/updated code is covered with tests

[igor-morev]

@RomanHotsiy take a look my solution, please

[RomanHotsiy]

Does it work? Can you share a screenshot?

[igor-morev]

@RomanHotsiy yes

[igor-morev]

@RomanHotsiy what do you think ?

[RomanHotsiy]

Hi @Morev1993, sorry for the delay.

I checked it. I'm not sure if we want to merge it. You're the only user who reported it and it adds some complexity to our codebase.

I also don't like different font sizes in the sidebar on the screenshot you sent. Let us think a little bit and decide.

Thanks for contributing anyways 🙌

[lornajane]

Thanks again for the contribution. We decided that we aren't going to merge this pull request, so I'll close it (sorry for the slow response time, we really do appreciate you being part of the project!)