fix: misleading documentation on role name restrictions #6044

Job	Run time
nox / Run nox static session	14s
nox / Run nox formatters_check session	12s
nox / Run nox typing session	27s
nox / Run nox spelling session	13s
nox / Run nox checkers(rstcheck) session	25s
nox / Run nox checkers(docs-build) session	1m 35s
nox / Run nox actionlint session	12s
nox / Run nox pip-compile session	25s
check	1s
	3m 44s

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