qnet: fixed typo

Author: taroth21

xml/ha_qdevice-qnetd.xml

@@ -497,7 +497,7 @@ Cluster "hacluster": <co xml:id="co-quorum-qnet-name"/>
              <para>
                 As an alternative with an identical result, you can also use
                 the <command>crm corosync status qnetd</command> command on
-                one of cluster nodes.
+                one of the cluster nodes.
              </para>
           </callout>
           <callout arearefs="co-quorum-qnet-name">