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## Description
Quick refresh of autobuild content.
- Updated some linkTitles and weights to make the titles more scannable
in the nav and somewhat logically ordered.
- Updated capitalization to sentence case for consistency.
- `Automated builds`->`[Aa]utomated builds`
- `Autobuild`->`[Aa]utobuild`
- `Automated tests`->`[Aa]utomated tests`
- `Autotest`->`[Aa]utotest`
- Updated note formatting.
- Fixed some vale nags.
- `above`->`previous`
- `click`->`select`
Did a `git mv` with the following files, but I think the similar file
names caused everything to be flagged as new/deleted rather than just
renamed. Not planning to do a deeper refresh of the existing content at
this time.
- Renamed `_index.md` to `setup.md`
- Renamed `how-builds-work.md` to `_index.md`
https://deploy-preview-21610--docsdocker.netlify.app/docker-hub/repos/manage/builds/
## Related issues or tickets
ENGDOCS-2351
## Reviews
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- [ ] Editorial review
Signed-off-by: Craig <craig.osterhout@docker.com>