Compute jobs page is too long

[atombaby]

URL of existing content (a rendered, sciwiki.fredhutch.org link)

This page (https://github.com/FredHutch/wiki/blob/main/_scicomputing/compute_jobs.md) has too many headers so the TOC actually gets too long. Consider simplifying it as part of this PR?

Specific information requests or concerns, or specific region on page of content to refresh.

@ GitHub username of the listed primary reviewer of the page if known