Fix Javadoc warnings

Change-Id: I366f2b9f3c11645a3392e0689619bfbad7a9eedd
diff --git a/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java b/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java
index 4fbeeeb..b404bae 100644
--- a/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java
+++ b/core/api/src/main/java/org/onosproject/store/service/TransactionContext.java
@@ -56,9 +56,11 @@
 
     /**
      * Creates a new transactional map.
+     * @param <K> key type
+     * @param <V> value type
      * @param mapName name of the transactional map.
      * @param serializer serializer to use for encoding/decoding keys and vaulues.
      * @return new Transactional Map.
      */
     <K, V> TransactionalMap<K, V> createTransactionalMap(String mapName, Serializer serializer);
-}
\ No newline at end of file
+}