Fixed typo.

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@9241 b35dd754-fafc-0310-a699-88a17e54d16e

src/i18n/openfire_i18n_en.properties

@@ -2448,7 +2448,7 @@ muc.room.occupants.affiliation=Affiliation
 
 # Clustering page
 
-system.clustering.title=Clusterting
+system.clustering.title=Clustering
 system.clustering.info=Clustering allows the server to scale a lot more and at the same time avoid a single point of \
   failure. Use the form to below to enable or disable clustering for this system. After disabling clustering this \
   system will leave the cluster but the cluster will remain active with the remaining cluster nodes. When clustering \