Code highlights don't work for all languages

[kvistgaard]

For Javascript, and CSS, it works fine, but not for Turtle:

Here's how it looks in Roam

And here's the same snippet in Presentation mode:

Interestingly, wth SPARQL, which is a variant of Turtle, everything is fine.

[mdroidian]

We use PrismJS, which looks like it doesn't support that code block.

We could either:

• report this issue to PrismJS: https://github.com/PrismJS/prism/
• create our own definitions: https://prismjs.com/extending.html#language-definitions
• see if we can piggy back off Roam via: #6

I'm leaning towards the last option, but I'm not sure when I'll be able to tackle that just yet.