missed @OverRide annotation

Signed-off-by: Sandesh Kumar <[email protected]>

Author: sandeshkr419

server/src/main/java/org/opensearch/search/profile/aggregation/ProfilingAggregator.java

@@ -169,6 +169,7 @@ public StreamingCostMetrics getStreamingCostMetrics() {
         return delegate instanceof Streamable ? ((Streamable) delegate).getStreamingCostMetrics() : StreamingCostMetrics.nonStreamable();
     }
 
+    @Override
     public Aggregator unwrapAggregator() {
         return delegate;
     }