Fixed weird DOM error

Kept getting a weird DOM error "DOMException: Failed to execute 'appendChild' on 'Node': This node type does not support this method." where upon refresh of the post page, the rendered markdown content of the post disappeared and a plain text version appeared. Fixed it by removing
and
tags, and changing the $md.render element to a
instead of

. One of the weirder bugs I had to fix. 🧐