spelling, style tweaks

See merge request !30

That way people will immediately see they have to act and when.

Mostly correcting stuff caught by my spell checker.

After a final review I thought it wasn't clear enough what was being
asked of survey authors. Hopefully this should make it crystal clear.

Also created a new non-confidential GitLab issue for discussion.

The previous change here broke the pipeline

We have a working howto now, so this is fixed. More issues crept up,
but I'll document them too.

See: team#40755

This reverts commit 14d81c9d.

It's redundant, more noisy, and less precise than dsa-check-packages.

It was also purged from all hosts with cumin.