bring back styling of markdown files to shape
There's a PR that implements github flavored markdown extension which allows to create more elements like tables/lists.
It seems most of the items renders correctly, however some (like tables) are missing styles completly.
Here's how it looks on github: https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet
we should copy that file content and make it look similar in our renderer