Add diagram to relevant tutorial

Author: thomas-desmond

src/content/docs/r2/tutorials/upload-logs-event-notifications.mdx

@@ -15,6 +15,8 @@ import { Render, PackageManagers } from "~/components";
 
 This example provides a step-by-step guide on using [event notifications](/r2/buckets/event-notifications/) to capture and store R2 upload logs in a separate bucket.
 
+![Push-Based R2 Event Notifications](~/assets/images/reference-architecture/event-notifications-for-storage/pushed-based-event-notification.svg)
+
 ## Prerequisites
 
 To continue, you will need: