Github Files add code color option

[DominicGBauer]

Description

Github files just show a black and white copy of the code, it would be great if we could set language and then it would change the coloring of the code to match what happens when you use a code block.

I.e. instead of this

I can set it to Javascript and it then displays like this

[DominicGBauer]

It looks like this should already be enabled based on this #194. Perhaps this is actually a bug @addisonschultz ?

[addisonschultz]

Hi @DominicGBauer - this does look like a bug right now, thank you for pointing this out! I'm going to leave this issue open for now, will try to get to this one soon!