[DOC] RDoc for additions #180

Job	Run time
ruby-versions / Generate Ruby versions	2s
ubuntu-20.04 2.3	56s
ubuntu-20.04 2.4	51s
ubuntu-20.04 2.5	1m 7s
ubuntu-20.04 2.6	1m 10s
ubuntu-20.04 2.7	56s
ubuntu-20.04 3.0	25s
ubuntu-20.04 3.1	23s
ubuntu-20.04 3.2	21s
ubuntu-20.04 head	54s
ubuntu-20.04 jruby	1m 9s
ubuntu-20.04 jruby-head	1m 8s
ubuntu-20.04 truffleruby	49s
ubuntu-20.04 truffleruby-head	59s
ubuntu-22.04 2.3	1m 2s
ubuntu-22.04 2.4	1m 29s
ubuntu-22.04 2.5	54s
ubuntu-22.04 2.6	1m 10s
ubuntu-22.04 2.7	58s
ubuntu-22.04 3.0	20s
ubuntu-22.04 3.1	23s
ubuntu-22.04 3.2	56s
ubuntu-22.04 head	19s
ubuntu-22.04 jruby	1m 6s
ubuntu-22.04 jruby-head	2m 33s
ubuntu-22.04 truffleruby	53s
ubuntu-22.04 truffleruby-head	55s
macos-11 2.3	2m 3s
macos-11 2.4	2m 0s
macos-11 2.5	2m 2s
macos-11 2.6	2m 1s
macos-11 2.7	2m 4s
macos-11 3.0	35s
macos-11 3.1	33s
macos-11 3.2	35s
macos-11 head	38s
macos-11 jruby	1m 14s
macos-11 jruby-head	1m 16s
macos-11 truffleruby	1m 39s
macos-11 truffleruby-head	1m 34s
macos-12 2.3	2m 8s
macos-12 2.4	2m 28s
macos-12 2.5	2m 7s
macos-12 2.6	2m 26s
macos-12 2.7	2m 9s
macos-12 3.0	44s
macos-12 3.1	37s
macos-12 3.2	33s
macos-12 head	28s
macos-12 jruby	1m 35s
macos-12 jruby-head	1m 41s
macos-12 truffleruby	1m 36s
macos-12 truffleruby-head	1m 47s
windows-latest 2.3	1m 55s
windows-latest 2.4	2m 19s
windows-latest 2.5	4m 46s
windows-latest 2.6	2m 52s
windows-latest 2.7	2m 50s
windows-latest 3.0	1m 14s
windows-latest 3.1	1m 35s
windows-latest 3.2	2m 3s
windows-latest head	1m 43s
windows-latest mswin	1m 35s
ubuntu-latest jruby-9.1	1m 11s
ubuntu-latest jruby-9.2	1m 21s
ubuntu-latest jruby-9.3	1m 41s
	1h 29m 46s

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