Update kube-jupyterhub.md

kube-jupyterhub.md

@@ -24,6 +24,6 @@ version.BuildInfo{Version:"v3.5.0", GitCommit:"32c22239423b3b4ba6706d450bd044baf
 ```
 The creation of volumes required by kube app can achieved :
 if csi-cinder-controllerplugin + csi-cinder-nodeplugin pods are running
-and if a dedicated storage class is created (storageclass.yaml)
+and if a dedicated storage class is created `storageclass.yaml`
 
 ```
\ No newline at end of file