Fix name of remote clusters reference
This commit fixes the name of the reference to the remote clusters
module on the modules page by adding a missing character.
@@ -78,7 +78,7 @@ The modules in this section are:
A tribe node joins one or more clusters and acts as a federated
client across them.
-<<modules-remote-clusters, Remote cluster>>::
+<<modules-remote-clusters, Remote clusters>>::
Remote clusters are used in features that work by connecting across clusters
on the transport layer.
