Update manpage and completions. #31194

Job	Run time
syntax	49s
tap syntax	6m 35s
vendored gems	39s
formula audit	4m 38s
cask audit	2m 59s
tests (online)	5m 28s
update-test (Ubuntu)	21s
test default formula (Ubuntu 22.04)	1m 25s
update-test (macOS)	24s
tests (generic OS)	2m 50s
test default formula (Ubuntu 20.04)	2m 51s
tests (Ubuntu 24.04)	3m 7s
test default formula (macOS 13 x86_64)	3m 28s
tests (Ubuntu 22.04)	3m 8s
test default formula (macOS 15 arm64)	1m 22s
tests (Ubuntu 20.04)	3m 49s
tests (macOS 13 x86_64)	11m 31s
tests (macOS 15 arm64)	4m 47s
	1h 0m 11s

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