Merge pull request #14018 from kufi/master

Added correct generic type parameter on ScriptedMetricBuilder

core/src/main/java/org/elasticsearch/search/aggregations/metrics/scripted/ScriptedMetricBuilder.java

@@ -30,7 +30,7 @@ import java.util.Map;
 /**
  * Builder for the {@link ScriptedMetric} aggregation.
  */
-public class ScriptedMetricBuilder extends MetricsAggregationBuilder {
+public class ScriptedMetricBuilder extends MetricsAggregationBuilder<ScriptedMetricBuilder> {
 
     private Script initScript = null;
     private Script mapScript = null;