* Enable the internals plugin by default in docs
1. Why hide such a useful thing from the users?
2. When playing around with code examples from the docs they may want to know how the resulting html looks.
* Improve doc
* Typo
Co-authored-by: Jeremy Ruston <jeremy@jermolene.com>
By making the docs available as a plugin we make it easier for people
to fork their own copy of the docs without losing the ability to get
updates in the future (which can be done just be updating the docs
plugin)
