Convert all video questions to markdown style?

The questions in the video challenges are a mix of markdown and html. Some use markdown - and some use html style.

This issue is for a discussion on if we want to convert them all to use markdown and possibly remove all the references of html availability in the documentation.

There’s certainly cases where formatting with markdown makes the question harder to read. If the question doesn’t have any code or html tags, the only reason to use the markdown format (all the |'s) is to just make it consistent and maybe keep some confusion down when people come across the different versions.

[moT01]

I vote to just make them all markdown. It gives us a standard that gives people a concrete way to make them. And hopefully stop anyone from having to decide, ‘should this use markdown’, or ‘can I leave it html’. Everyone will have an answer to that, and hopefully be on the same page.

[JapneetSingh5]

I’m really sorry for the delay on this, I will open a pull request next week for sure.