🚧📚 More consistent docs for IMAP4rev2 capability #1029

Job	Run time
ruby-versions / Generate Ruby versions	1s
build (3.1 / ubuntu-latest)	42s
build (3.1 / macos-latest)	33s
build (3.1 / windows-latest)	2m 50s
build (3.2 / ubuntu-latest)	44s
build (3.2 / macos-latest)	31s
build (3.2 / windows-latest)	1m 42s
build (3.3 / ubuntu-latest)	39s
build (3.3 / macos-latest)	27s
build (3.3 / windows-latest)	2m 53s
build (head / ubuntu-latest)	46s
build (head / macos-latest)	39s
build (head / windows-latest)	1m 33s
	14m 0s

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