fix stylecheck

Author: prakharjain09

sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala

@@ -1276,8 +1276,8 @@ object SQLConf {
 
   val COLLAPSE_AGGREGATE_NODES_ENABLED = buildConf("spark.sql.execution.collapseAggregateNodes")
     .internal()
-    .doc("Whether to collapse the Partial and the Final aggregate exec nodes based on whether there is " +
-      "exchange between them")
+    .doc("Whether to collapse the Partial and the Final aggregate exec nodes based " +
+      "on whether there is exchange between them")
     .version("3.1.0")
     .booleanConf
     .createWithDefault(true)

sql/core/src/main/scala/org/apache/spark/sql/execution/CollapseAggregates.scala

@@ -38,7 +38,7 @@ object CollapseAggregates extends Rule[SparkPlan] {
     }
 
   private def collapseAggregates(plan: SparkPlan): SparkPlan = {
-    plan transformDown {
+    plan transform {
       case parent@HashAggregateExec(_, _, _, _, _, _, child: HashAggregateExec)
         if checkIfAggregatesCanBeCollapsed(parent, child) =>
         val completeAggregateExpressions = child.aggregateExpressions.map(_.copy(mode = Complete))
@@ -77,8 +77,9 @@ object CollapseAggregates extends Rule[SparkPlan] {
     }
   }
 
-  private def checkIfAggregatesCanBeCollapsed(parent: BaseAggregateExec,
-                                              child: BaseAggregateExec): Boolean = {
+  private def checkIfAggregatesCanBeCollapsed(
+      parent: BaseAggregateExec,
+      child: BaseAggregateExec): Boolean = {
     val parentHasFinalMode = parent.aggregateExpressions.forall(_.mode == Final)
     if (!parentHasFinalMode) {
       return false