Update manpage and completions. #29264

Job	Run time
syntax	1m 4s
formula audit	6m 54s
tap syntax	4m 49s
docker	4m 41s
cask audit	2m 52s
tests (online)	12m 13s
update-test (Ubuntu 22.04)	18s
tests (generic OS)	5m 53s
update-test (macOS 13)	25s
vendored gems	48s
tests (Ubuntu 22.04)	6m 16s
test default formula (Ubuntu 22.04)	4m 25s
tests (Ubuntu 20.04)	7m 31s
test default formula (Ubuntu 20.04)	7m 4s
tests (macOS 13 x86_64)	8m 15s
test default formula (macOS 13 x86_64)	2m 34s
tests (macOS 14 arm64)	5m 6s
test default formula (macOS 14 arm64)	1m 15s
	1h 22m 23s

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