Documentation about PGP Change-Id: I3420f5b3f771b73cdffabbe29abb0fbf143ffad7 Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.common/+/189358 Tested-by: Mickael Istria <mistria@redhat.com> Reviewed-by: Mickael Istria <mistria@redhat.com>