Update index-add.md

Author: ssalgadodev

articles/ai-foundry/how-to/index-add.md

@@ -9,7 +9,7 @@ ms.custom:
   - build-2024
   - ignite-2024
 ms.topic: how-to
-ms.date: 05/15/2025
+ms.date: 06/29/2025
 ms.reviewer: estraight
 ms.author: ssalgado
 author: ssalgadodev