docs: point Groove protocol refs at hyperpolymath/groove-protocol #52

Job	Run time
governance / Well-Known (RFC 9116 + RSR)	7s
governance / Security policy checks	8s
governance / Code quality + docs	23s
governance / Validate Hypatia baseline	7s
governance / Workflow security linter	7s
governance / Language / package anti-pattern policy	14s
governance / Licence consistency	10s
governance / Guix primary / Nix fallback policy	8s
governance / Trusted-base reduction policy	12s
	1m 36s

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