update name AI Agent Service

Author: sdgilley

articles/ai-studio/how-to/develop/sdk-overview.md

@@ -354,7 +354,7 @@ Instantiate the search and/or search index client as desired:
 
 To learn more about using Azure AI Search, check out [Azure AI Search documentation](/azure/search/).
 
-## Azure AI agents runtime
+## Azure AI Agent Service
 
 Azure AI Agent Service is a fully managed service designed to empower developers to securely build, deploy, and scale high-quality, and extensible AI agents. Using an extensive ecosystem of models, tools and capabilities from OpenAI, Microsoft, and third-party providers, Azure AI Agent Service enables building agents for a wide range of generative AI use cases.