chore(docs): stop committing codegenned docs (#4186)

# Description

## Problem\*

Resolves <!-- Link to GitHub Issue -->

## Summary\*

We shouldn't be committing codegenned docs so this PR codegens directly
into the `processed-docs` dir.

## Additional Context



## Documentation\*

Check one:
- [ ] No documentation needed.
- [x] Documentation included in this PR.
- [ ] **[Exceptional Case]** Documentation to be submitted in a separate
PR.

# PR Checklist\*

- [x] I have tested the changes locally.
- [x] I have formatted the changes with [Prettier](https://prettier.io/)
and/or `cargo fmt` on default settings.