Javadoc typo fix.

Change-Id: I3224bab9483ce58785c759f45f2557be44a2fcb7
diff --git a/src/main/java/net/onrc/onos/core/topology/Link.java b/src/main/java/net/onrc/onos/core/topology/Link.java
index 2bd9cef..9734704 100644
--- a/src/main/java/net/onrc/onos/core/topology/Link.java
+++ b/src/main/java/net/onrc/onos/core/topology/Link.java
@@ -49,7 +49,7 @@
      * <p/>
      * TODO: What is the unit?
      *
-     * @param return the link cost.
+     * @return the link cost.
      */
     public int getCost();