Revert fixing incorrect documentation description for filter[queried] field in api/v2/metrics endpoint (DataDog#3720)

Co-authored-by: ci.datadog-api-spec <packages@datadoghq.com>

Author: api-clients-generation-pipeline[bot]

.generator/schemas/v2/openapi.yaml

@@ -86918,8 +86918,11 @@ paths:
         required: false
         schema:
           type: boolean
-      - description: (Preview) Filter custom metrics that have or have not been queried
-          in the past 30 days.
+      - description: '(Preview) Filter custom metrics that have or have not been queried
+          in the specified window[seconds].
+
+          If no window is provided or the window is less than 2 hours, a default of
+          2 hours will be applied.'
         example: true
         in: query
         name: filter[queried]