Fix reference to remote clusters docs
This commit fixes a reference to the remote clusters docs from the
modules page.
@@ -78,8 +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-cluster, Remote cluster>>::
-
+<<modules-remote-clusters, Remote cluster>>::
Remote clusters are used in features that work by connecting across clusters on the transport layer.
<<modules-cross-cluster-search, Cross cluster Search>>::
