Merge branch 'deep-researcher' of https://github.com/aahill/azure-ai-docs-pr into deep-researcher

Author: aahill

articles/ai-foundry/agents/concepts/model-region-support.md

@@ -8,7 +8,7 @@ ms.author: aahi
 ms.service: azure-ai-agent-service
 ms.topic: conceptual
 ms.date: 07/10/2025
-ms.custom: azure-ai-agents
+ms.custom: azure-ai-agents, references_regions
 ---
 
 # Models supported by Azure AI Foundry Agent Service