Update Post an event v2 API description (DataDog#3437)

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

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

.generator/schemas/v2/openapi.yaml

@@ -62513,8 +62513,12 @@ paths:
       description: "This endpoint allows you to publish events.\n\n**Note:** To utilize
         this endpoint with our client libraries, please ensure you are using the latest
         version released on or after July 1, 2025. Earlier versions do not support
-        this functionality.\n\n\u2705 **Only events with the `change` or `alert` category**
-        are in General Availability. For change events, see [Change Tracking](https://docs.datadoghq.com/change_tracking)
+        this functionality.\n\n**Important:** Upgrade to the latest client library
+        version to use the updated endpoint at `https://event-management-intake.{site}/api/v2/events`.
+        Older client library versions of the Post an event (v2) API send requests
+        to a deprecated endpoint (`https://api.{site}/api/v2/events`).\n\n\u2705 **Only
+        events with the `change` or `alert` category** are in General Availability.
+        For change events, see [Change Tracking](https://docs.datadoghq.com/change_tracking)
         for more details.\n\n\u274C For use cases involving other event categories,
         use the V1 endpoint or reach out to [support](https://www.datadoghq.com/support/).\n\n\u274C
         Notifications are not yet supported for events sent to this endpoint. Use

api/datadogV2/api_events.go

@@ -20,6 +20,8 @@ type EventsApi datadog.Service
 //
 // **Note:** To utilize this endpoint with our client libraries, please ensure you are using the latest version released on or after July 1, 2025. Earlier versions do not support this functionality.
 //
+// **Important:** Upgrade to the latest client library version to use the updated endpoint at `https://event-management-intake.{site}/api/v2/events`. Older client library versions of the Post an event (v2) API send requests to a deprecated endpoint (`https://api.{site}/api/v2/events`).
+//
 // ✅ **Only events with the `change` or `alert` category** are in General Availability. For change events, see [Change Tracking](https://docs.datadoghq.com/change_tracking) for more details.
 //
 // ❌ For use cases involving other event categories, use the V1 endpoint or reach out to [support](https://www.datadoghq.com/support/).