Cleanuop and CORS fixing

BOUNCE_HANDLING_SETUP.md

@@ -36,7 +36,7 @@ The system uses AWS Simple Notification Service (SNS) to receive real-time bounc
 4. Name: `ses-bounce-notifications` (or your preferred name)
 5. Display name: `SES Bounce Notifications`
 6. Click "Create topic"
-7. **Save the Topic ARN** (you'll need it in step 4)
+7. **Save the Topic ARN** (you'll need it in step 4) arn:aws:sns:eu-west-2:827164363113:ses-bounces
 
 ### 3. Subscribe Your Webhook to SNS Topic