Index: Refactor from git mishaps, reorganize some content
I reviewed this page today and was surprised to discover that somehow,
this file has an older state from when we were solving merge conflicts.
Oh no!
I tried to mitigate by cleaning up the mistakes and typos. I also
reorganized the format in an attempt to de-duplicate some information.
Git merge conflicts bite hard sometimes!
Signed-off-by: Justin W. Flory (he/him) <git@jwf.io>