Javadoc fixes

Change-Id: Id23ed2d576b2222194153be9d043ca5acafe67ae
diff --git a/src/main/java/org/onosproject/segmentrouting/web/PolicyWebResource.java b/src/main/java/org/onosproject/segmentrouting/web/PolicyWebResource.java
index 257b42a..cdc53a0 100644
--- a/src/main/java/org/onosproject/segmentrouting/web/PolicyWebResource.java
+++ b/src/main/java/org/onosproject/segmentrouting/web/PolicyWebResource.java
@@ -65,7 +65,7 @@
      * @param input JSON stream for policy to create
      * @return status of the request - OK if the policy is created,
      * INTERNAL_SERVER_ERROR if the JSON is invalid or the policy cannot be created
-     * @throws IOException
+     * @throws IOException if JSON processing fails
      */
     @POST
     @Consumes(MediaType.APPLICATION_JSON)