Fix Javadoc warnings

Change-Id: Icf8b6b6f77ea80d3975aa975226a178145067adf
diff --git a/web/api/src/main/java/org/onosproject/rest/resources/FlowsWebResource.java b/web/api/src/main/java/org/onosproject/rest/resources/FlowsWebResource.java
index 42e9590..a11ce09 100644
--- a/web/api/src/main/java/org/onosproject/rest/resources/FlowsWebResource.java
+++ b/web/api/src/main/java/org/onosproject/rest/resources/FlowsWebResource.java
@@ -103,6 +103,7 @@
      * Criteria description:
      * https://wiki.onosproject.org/display/ONOS/Flow+Rule+Criteria
      *
+     * @param appId application id
      * @param stream flow rules JSON
      * @return status of the request - CREATED if the JSON is correct,
      * BAD_REQUEST if the JSON is invalid