Update some of the docs on issue tracking.

Review Request #12841 — Created Feb. 24, 2023 and submitted — Latest diff uploaded

Review Board

This updates the issue tracking docs to more cleanly define and promote
the various options, buttons, and concepts.

The opening paragraphs and the Issue Verification section have had
larger paragraphs with several key points split into one paragraph per
key point.

The "Summary Table" section has been renamed to "Issue Summary Table",
with a reference name set so we can refer to it elsewhere.

Button options and Issue Summary Table concepts have been broken down
into handy bullet points, helping skim what's available.

There's a TODO added for supplying a screenshot for issue verification.
This will be left in until I get around to building new screenshots.
TODOs are now set so they won't show up in the generated docs.

Built and viewed the docs. Checked for bad links, spelling errors, and
build errors.