The main cleanup here is to move the examples out of the bulleted
list, which was getting rendered in an ugly/confusing way.
I also removed some redundant text, fixed some typos, and changed
the wording a bit.
This reverts commit 5a1869901. I reviewed this change and decided not
to merge it yet, but then I did anyway <_< >_>, along with some others
in the same PR.
This should get test-documentation and test-help-documentation passing
again after we moved everything around in the last commit.
There are a lot more absolute links (generally in code comments) to
update, but they are lower-priority and can be done in a follow-up
pass.