[DOC] Add .document #814

Job	Run time
ruby-versions / Generate Ruby versions	4s
test (3.0, ubuntu-latest)	17s
test (3.0, macos-latest)	2m 14s
test (3.0, windows-latest)	2m 32s
test (3.1, ubuntu-latest)	21s
test (3.1, macos-latest)	33s
test (3.1, windows-latest)	2m 4s
test (3.2, ubuntu-latest)	19s
test (3.2, macos-latest)	2m 42s
test (3.2, windows-latest)	3m 6s
test (head, ubuntu-latest)	22s
test (head, macos-latest)	34s
test (head, windows-latest)	2m 20s
test (jruby)	1m 6s
test (jruby-head)	1m 5s
test (truffleruby)	27s
test (truffleruby-head)	44s
	20m 50s

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