ES|QL categorize -> GA (#129703)

Author: jan-elastic

docs/reference/esql/functions/grouping-functions.asciidoc

@@ -9,7 +9,7 @@ The <<esql-stats-by>> command supports these grouping functions:
 
 // tag::group_list[]
 * <<esql-bucket>>
-* experimental:[] <<esql-categorize>> NOTE: Requires a https://www.elastic.co/subscriptions[platinum license].
+* <<esql-categorize>> NOTE: Requires a https://www.elastic.co/subscriptions[platinum license].
 // end::group_list[]
 
 include::layout/bucket.asciidoc[]

docs/reference/esql/functions/kibana/definition/categorize.json

@@ -62,7 +62,7 @@ public class Categorize extends GroupingFunction.NonEvaluatableGroupingFunction
                 tag = "docsCategorize",
                 description = "This example categorizes server logs messages into categories and aggregates their counts. "
             ) },
-        preview = true
+        preview = false
     )
     public Categorize(
         Source source,