Copy note to Contributing doc #11780

Job	Run time
lint_ruby	27s
spelling	12s
build_node (ubuntu-latest)	1m 37s
Ruby 3.1 on ubuntu-latest	18m 11s
build_node (macos-latest)	2m 0s
Verify Jekyll website builds	9s
Ruby 3.2 on ubuntu-latest	16m 43s
lint_node	35s
build_node (windows-latest)	5m 15s
Ruby 3.3 on ubuntu-latest	11m 46s
Ruby 3.1 on macos-latest	11m 14s
Ruby 3.2 on macos-latest	8m 46s
Ruby 3.3 on macos-latest	9m 4s
Ruby 3.1 on windows-latest	24m 53s
Ruby 3.2 on windows-latest	23m 24s
Ruby 3.3 on windows-latest	25m 49s
	2h 40m 5s

Provide feedback