Cleanup Markdown converter (#7519)
Cleanup Markdown converter (#7519)

Merge pull request 7519
chrisfinazzo/jekyll,Strangehill/jekyll,yhironaka/yhironaka.github.io,tillgrallert/jekyll,jaybe-jekyll/jekyll,jaybe-jekyll/jekyll,tillgrallert/jekyll,tillgrallert/jekyll,Strangehill/jekyll,ryanshaw/jekyll,jekyll/jekyll,fulldecent/jekyll,fulldecent/jekyll,jaybe-jekyll/jekyll,Strangehill/jekyll,x-way/jekyll,x-way/jekyll,ryanshaw/jekyll,x-way/jekyll,chrisfinazzo/jekyll,Strangehill/jekyll,fulldecent/jekyll,tillgrallert/jekyll,Strangehill/jekyll,jaybe-jekyll/jekyll,chrisfinazzo/jekyll,x-way/jekyll,tillgrallert/jekyll,fulldecent/jekyll,chrisfinazzo/jekyll,jekyll/jekyll,ryanshaw/jekyll,ryanshaw/jekyll,jekyll/jekyll,jekyll/jekyll