Render markdown in description fields

[wlach]

Currently we're now rendering markdown in Glean description fields, which doesn't look great:

http://localhost:5000/#!/apps/mozregression

We should render these types of fields with markdown. For the schema dictionary I used the marked parser, which seems to work pretty well: https://www.npmjs.com/package/marked

It seems most likely that we'll define a svelte component for rendering this type of information, in which case we should add a story for it in: https://github.com/mozilla/glean-dictionary/tree/main/stories

[alvesitalo]

I sent a pr #155 fixing this @wlach.

[wlach]

I sent a pr #155 fixing this @wlach.

Thanks! I will have a look at it on Monday.