Update create-cluster

utils/create-cluster/create-cluster

@@ -111,4 +111,4 @@ echo "tail <id>   -- Run tail -f of instance at base port + ID."
 echo "tailall     -- Run tail -f for all the log files at once."
 echo "clean       -- Remove all instances data, logs, configs."
 echo "clean-logs  -- Remove just instances logs."
-echo "call <cmd>  -- Call a command (up to 7 arguments) on all nodes. "
+echo "call <cmd>  -- Call a command (up to 7 arguments) on all nodes."