Add examples to the types page

[Noviny]

Hi! when working on the babel plugins, I really missed having examples of the types, something really simple such as

• awaitExpression await func()

This makes it easy to find what syntax relates to particular expression types, as well as see them in the AST in context (through a link).

I ended up doing a lot of this for my own benefit over here: https://github.com/Noviny/babel-type-descriptions (most of those links are sadly now broken)

I wanted to know if finishing rounding out these types, and contrributing it to the types page on the website was something you would be interested in having?

Cheers!

[babel-bot]

Hey @Noviny! We really appreciate you taking the time to report an issue. The collaborators
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