updating structured outputs

Author: aahill

articles/ai-services/openai/how-to/structured-outputs.md

@@ -19,6 +19,7 @@ Structured outputs make a model follow a [JSON Schema](https://json-schema.org/o
 > [!NOTE]
 > Currently structured outputs are not supported with:
 > - [Bring your own data](../concepts/use-your-data.md) scenarios.
+> - [Assistants](../how-to/assistant.md) or [Azure AI Agents Service](../../agents/overview.md).
 > - `gpt-4o-audio-preview` version: `2024-12-17`.
 
 ## Supported models