docsp-33327 - update window api (#502)

(cherry picked from commit 19a6c21)

Author: mongoKart

source/fundamentals/builders/aggregates.txt

@@ -2,6 +2,13 @@
 Aggregates Builders
 ===================
 
+.. facet::
+   :name: genre
+   :values: reference
+ 
+.. meta::
+   :keywords: code examples
+
 .. contents:: On this page
    :local:
    :backlinks: none

source/includes/fundamentals/code-snippets/builders/AggBuilders.java

@@ -93,8 +93,8 @@ private void setWindowFieldsStage() {
         // begin setWindowFields
         Window pastMonth = Windows.timeRange(-1, MongoTimeUnit.MONTH, Windows.Bound.CURRENT);
         setWindowFields("$localityId", Sorts.ascending("measurementDateTime"),
-                WindowedComputations.sum("monthlyRainfall", "$rainfall", pastMonth),
-                WindowedComputations.avg("monthlyAvgTemp", "$temperature", pastMonth));
+                WindowOutputFields.sum("monthlyRainfall", "$rainfall", pastMonth),
+                WindowOutputFields.avg("monthlyAvgTemp", "$temperature", pastMonth));
         // end setWindowFields
     }