Fix javadoc warnings

Change-Id: I3de24a04593f47c786f698f5ee1669b3d2f2fdfc
diff --git a/apps/cpman/src/main/java/org/onosproject/cpman/MetricsAggregator.java b/apps/cpman/src/main/java/org/onosproject/cpman/MetricsAggregator.java
index 2367629..abd5b1c 100644
--- a/apps/cpman/src/main/java/org/onosproject/cpman/MetricsAggregator.java
+++ b/apps/cpman/src/main/java/org/onosproject/cpman/MetricsAggregator.java
@@ -45,8 +45,9 @@
      * Instantiates the metrics service
      * Initializes all the general metrics for that object
      *
-     * @param type      Control metric type
-     * @param deviceId  DeviceId
+     * @param metricsService MetricsService reference
+     * @param type           Control metric type
+     * @param deviceId       DeviceId
      */
     MetricsAggregator(MetricsService metricsService, ControlMetricType type, Optional<DeviceId> deviceId) {
         String primitiveName = type.toString();