Update Post an event v2 API description (#3222)

Co-authored-by: ci.datadog-api-spec <[email protected]>

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

src/main/java/com/datadog/api/client/v2/api/EventsApi.java

@@ -91,6 +91,11 @@ public CompletableFuture<EventCreateResponsePayload> createEventAsync(
    * are using the latest version released on or after July 1, 2025. Earlier versions do not support
    * this functionality.
    *
+   * <p><strong>Important:</strong> Upgrade to the latest client library version to use the updated
+   * endpoint at <code>https://event-management-intake.{site}/api/v2/events</code>. Older client
+   * library versions of the Post an event (v2) API send requests to a deprecated endpoint (<code>
+   * https://api.{site}/api/v2/events</code>).
+   *
    * <p>✅ <strong>Only events with the <code>change</code> or <code>alert</code> category</strong>
    * are in General Availability. For change events, see <a
    * href="https://docs.datadoghq.com/change_tracking">Change Tracking</a> for more details.