move architecture

Author: sdgilley

articles/ai-studio/toc.yml

@@ -11,8 +11,6 @@ items:
       href: what-is-ai-studio.md
     - name: Azure AI Foundry and AI services
       href: concepts/related-content.md
-    - name: Azure AI Foundry architecture
-      href: concepts/architecture.md
       displayName: code, sdk
     - name: Azure AI FAQ
       href: faq.yml
@@ -490,6 +488,8 @@ items:
     href: reference/region-support.md
 - name: Resources
   items:
+  - name: Azure AI Foundry architecture
+    href: concepts/architecture.md
   - name: Support & help options
     href: ../ai-services/cognitive-services-support-options.md?context=/azure/ai-studio/context/context
   - name: Use Azure AI Foundry with a screen reader