Added beta badge

Author: kodster28

src/content/docs/workers-ai/features/batch-api/index.mdx

@@ -3,11 +3,12 @@ pcx_content_type: configuration
 title: Asynchronous Batch API
 sidebar:
   order: 1
+  group:
+    badge: Beta
 ---
 
 import { Render, PackageManagers, WranglerConfig, CURL } from "~/components";
 
-
 Asynchronous batch processing lets you send a collection (batch) of inference requests in a single call. Instead of expecting immediate responses for every request, the system queues them for processing and returns the results later.
 
 When you send a batch request, the API immediately acknowledges receipt with a status like `queued` and provides a unique `request_id`. This ID is later used to poll for the final responses once the processing is complete.