workflow manager information in parallel page needs better integration

[atombaby]

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

https://sciwiki.fredhutch.org/scicomputing/compute_parallel/#workflow-managers

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

Boilerplate sticks out a bit, needs to be better integrated into the why of parallel computing (e.g. put in next to rslurm). Trim lots as it's repetative.

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