Merge pull request #5504 from nckx/cleanups

Fix user-facing typos (mainly in descriptions)
(cherry picked from commit c76fb4c6ba1d2c4b0de7656ec96989282bfdb786)

Conflicts (skipped fixing missing files):
	nixos/modules/services/monitoring/cadvisor.nix
	nixos/modules/services/networking/tox-bootstrapd.nix