Update chaos-studio-region-availability.md

Updated ms.date

Author: prasha-microsoft

articles/chaos-studio/chaos-studio-region-availability.md

@@ -6,7 +6,7 @@ ms.author: abbyweisberg
 ms.reviewer: prashabora
 ms.service: azure-chaos-studio
 ms.topic: conceptual
-ms.date: 4/29/2022
+ms.date: 09/05/2024
 ms.custom: template-concept
 ---