Fix javadoc errors

Change-Id: Ia6c66e3485465a3fb1d90198839e9e4ee214fdf8
diff --git a/src/main/java/net/onrc/onos/core/topology/MastershipEvent.java b/src/main/java/net/onrc/onos/core/topology/MastershipEvent.java
index 01323ba..5ed36a3 100644
--- a/src/main/java/net/onrc/onos/core/topology/MastershipEvent.java
+++ b/src/main/java/net/onrc/onos/core/topology/MastershipEvent.java
@@ -117,7 +117,7 @@
      * ONOS Instance ID.
      *
      * @param obj another object to compare to this
-     * @returns true if equal, false otherwise false.
+     * @return true if equal, false otherwise false.
      */
     @Override
     public boolean equals(Object obj) {