Merge pull request #8000 from openshift-cherrypick-robot/cherry-pick-7866-to-enterprise-3.4

[enterprise-3.4] Bug 1547141: Update example of attaching GlusterFS PVC to docker registry

Author: ahardin-rh

install_config/storage_examples/gluster_backed_registry.adoc

@@ -98,7 +98,7 @@ instructions for troubleshooting before continuing.
 Then, attach the PVC:
 
 ----
-$ oc volume deploymentconfigs/docker-registry --add --name=v1 -t pvc \
+$ oc volume deploymentconfigs/docker-registry --add --name=registry-storage -t pvc \
      --claim-name=gluster-claim --overwrite
 ----