chore: polish a code comment #500

Job	Run time
ruby-versions / Generate Ruby versions	5s
windows-latest 2.7	1m 48s
windows-latest 3.0	1m 24s
windows-latest jruby-head	1m 49s
windows-latest 3.4	1m 2s
windows-latest mswin	1m 18s
windows-latest 3.1	1m 13s
windows-latest 3.2	1m 12s
windows-latest mingw	1m 6s
windows-latest 3.3	1m 19s
	12m 16s

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