Update external-metadata.md

Author: KendalBond007

articles/healthcare-apis/dicom/external-metadata.md

@@ -5,7 +5,7 @@ author: kabalas
 ms.service: azure-health-data-services
 ms.subservice: dicom-service
 ms.topic: how-to
-ms.date: 12/30/2024
+ms.date: 07/17/2025
 ms.author: kabalas
 ---