Update manpage and completions. #27653

Job	Run time
syntax	42s
vendored gems	48s
formula audit	6m 13s
cask audit	2m 51s
docker	4m 39s
tap syntax	4m 36s
test default formula (Ubuntu 22.04)	4m 16s
tests (online)	10m 27s
test default formula (Ubuntu 20.04)	5m 42s
tests (generic OS)	5m 57s
test default formula (macOS 13 x86_64)	2m 25s
update-test (Ubuntu 22.04)	1m 3s
tests (Ubuntu 22.04)	6m 15s
update-test (macOS 13)	1m 1s
tests (Ubuntu 20.04)	6m 47s
test default formula (macOS 14 arm64)	1m 28s
tests (macOS 13 x86_64)	8m 6s
tests (macOS 14 arm64)	5m 1s
	1h 18m 17s

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