Update notes on Azure OpenAI o3-deep-research model...

...to clarify accessibility and resource requirements in Azure.

Author: sanjeev3

articles/ai-foundry/agents/how-to/tools/deep-research-samples.md

@@ -14,8 +14,8 @@ ms.author: aahi
 # How to use the Deep Research tool
 
 > [!NOTE]
-> * The Agents service and SDK use the Azure OpenAI `o3-deep-research` model. This model is not accessible from Azure OpenAI Chat Completions and Responses APIs.
-> * The `o3-deep-research` model, GPT model deployment, and the AI Foundry project containing them **must all exist exist** in the same region and Azure subscription. Supported regions are **West US** and **Norway East**.
+> * The Agents service and SDK use the Azure OpenAI `o3-deep-research` model. This model is **not** available for use in Azure OpenAI Chat Completions and Responses APIs.
+> * The **parent** AI Foundry project resource and the contained  `o3-deep-research` and GPT models **children** resources **must exist** in the same Azure subscription and region. Supported regions are **West US** and **Norway East**.
 
 Use this article to learn how to use the Deep Research tool with the Azure AI Projects SDK, including code examples and setup instructions.