📚 Add RFC9051 link. #1772

Job	Run time
ruby-versions / Generate Ruby versions	3s
build (3.1 / ubuntu-latest)	37s
build (3.1 / macos-latest)	29s
build (3.1 / windows-latest)	2m 13s
build (3.2 / ubuntu-latest)	37s
build (3.2 / macos-latest)	23s
build (3.2 / windows-latest)	1m 38s
build (3.3 / ubuntu-latest)	37s
build (3.3 / macos-latest)	23s
build (3.3 / windows-latest)	3m 48s
build (3.4 / ubuntu-latest)	42s
build (3.4 / macos-latest)	27s
build (3.4 / windows-latest)	3m 15s
build (head / ubuntu-latest)	43s
build (head / macos-latest)	24s
build (head / windows-latest)	2m 14s
	18m 33s

Provide feedback