ES|QL categorize tech preview -> GA (#129398)

docs/reference/query-languages/esql/_snippets/functions/layout/categorize.md

@@ -1,12 +1,6 @@
 % This is generated by ESQL's AbstractFunctionTestCase. Do no edit it. See ../README.md for how to regenerate it.
 
 ## `CATEGORIZE` [esql-categorize]
-:::{warning}
-Do not use on production environments. This functionality is in technical preview and
-may be changed or removed in a future release. Elastic will work to fix any issues, but features in technical preview
-are not subject to the support SLA of official GA features.
-:::
-
 
 **Syntax**
 

docs/reference/query-languages/esql/_snippets/lists/grouping-functions.md

@@ -1,2 +1,2 @@
 * [`BUCKET`](../../functions-operators/grouping-functions.md#esql-bucket)
-* [preview] [`CATEGORIZE`](../../functions-operators/grouping-functions.md#esql-categorize)
+* [`CATEGORIZE`](../../functions-operators/grouping-functions.md#esql-categorize)

docs/reference/query-languages/esql/kibana/definition/functions/categorize.json

@@ -35,6 +35,6 @@
   "examples" : [
     "FROM sample_data\n| STATS count=COUNT() BY category=CATEGORIZE(message)"
   ],
-  "preview" : true,
+  "preview" : false,
   "snapshot_only" : false
 }

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/grouping/Categorize.java

@@ -63,7 +63,6 @@ public class Categorize extends GroupingFunction.NonEvaluatableGroupingFunction
                 tag = "docsCategorize",
                 description = "This example categorizes server logs messages into categories and aggregates their counts. "
             ) },
-        preview = true,
         type = FunctionType.GROUPING
     )
     public Categorize(