Improve contributing docs or automate tasks

[coolsoftwaretyler]

We should lay out some more specific steps about which documentation to update, where, and how in our contributing docs + maybe PR template.

Even better: can we automate that?

[trevor-coleman]

That's a good idea -- all the docs publishing is automated already, so we'd just need an instruction to creating new docs in /docs.

Something like:

1. Create new folder in docs for the package
2. Add your docs following the pattern in docs/whichever-is-best-example
3. Add your package to the index file, and README