Fix javadoc warnings

Change-Id: I3de24a04593f47c786f698f5ee1669b3d2f2fdfc
diff --git a/web/api/src/main/java/org/onosproject/rest/resources/MetersWebResource.java b/web/api/src/main/java/org/onosproject/rest/resources/MetersWebResource.java
index bc3cdec..743fc25e 100644
--- a/web/api/src/main/java/org/onosproject/rest/resources/MetersWebResource.java
+++ b/web/api/src/main/java/org/onosproject/rest/resources/MetersWebResource.java
@@ -96,6 +96,7 @@
      * Returns a meter by the meter id.
      *
      * @param deviceId device identifier
+     * @param meterId meter identifier
      * @return a meter, return 404 if no entry has been found
      * @onos.rsModel Meter
      */