docs/release: reference gpg2
docs/release: reference gpg2

endocode/fleet,jonboulle/fleet,endocode/fleet,jonboulle/fleet,dongsupark/fleet,giantswarm/fleet,endocode/fleet,giantswarm/fleet,coreos/fleet,giantswarm/fleet,dongsupark/fleet,dongsupark/fleet,coreos/fleet,jonboulle/fleet,coreos/fleet