Add missing javadoc

Signed-off-by: Atri Sharma <atrisharma@Atris-Mac-Studio.local>

Author: Atri Sharma

server/src/main/java/org/opensearch/search/aggregations/bucket/terms/StreamNumericTermsAggregator.java

@@ -46,6 +46,9 @@
 import static java.util.Collections.emptyList;
 import static org.opensearch.search.aggregations.InternalOrder.isKeyOrder;
 
+/**
+ * Stream-search terms aggregator for numeric fields.
+ */
 public class StreamNumericTermsAggregator extends TermsAggregator implements StreamingCostEstimable {
     private static final Logger logger = LogManager.getLogger(StreamNumericTermsAggregator.class);
     private final ResultStrategy<?, ?> resultStrategy;