javadoc fixes

Change-Id: I3b4fc2d99f42b2413a535fb411b9c19bdd186ad8
diff --git a/utils/misc/src/main/java/org/onlab/packet/IPacket.java b/utils/misc/src/main/java/org/onlab/packet/IPacket.java
index f1f01e4..6e2f2a0 100644
--- a/utils/misc/src/main/java/org/onlab/packet/IPacket.java
+++ b/utils/misc/src/main/java/org/onlab/packet/IPacket.java
@@ -64,7 +64,7 @@
     /**
      * Deserializes this packet layer and all possible payloads.
      *
-     * @param data
+     * @param data bytes to deserialize
      * @param offset
      *            offset to start deserializing from
      * @param length