Adjust heading levels in docs (#7163)

This PR adjusts the heading levels in the docs, as some of them weren't
following the right hierarchy.

I also formatted all of the docs with Prettier.

Release Notes:

- N/A
39200ec9f7Marshall Bowers committed on 1/31/2024, 5:34:31 PM· committed by GitHubparent6e443ac
14 files changedLine totals unavailable