Adjust top-level comments in all files (#699) #1151

Job	Run time
run-test-suite (ubuntu-latest, 3.9, 9.4)	12m 18s
run-test-suite (ubuntu-22.04, 3.7, 9.1)	8m 59s
run-test-suite (ubuntu-latest, 3.13, latest)	12m 45s
run-test-suite (ubuntu-latest, 3.9, latest)	9m 50s
	43m 52s

Provide feedback