update landing page

Author: laujan

articles/ai-services/content-understanding/index.yml

@@ -25,7 +25,7 @@ landingContent:
           - text: What's new in Azure AI Content Understanding
             url: whats-new.md
 
-  - title: Modalities
+  - title: Capabilities
     linkLists:
       - linkListType: concept
         links:
@@ -36,7 +36,7 @@ landingContent:
         - text: Image
           url: image/overview.md
         - text: Document
-          url: document/overview.md   
+          url: document/overview.md
 
   - title: Get started
     linkLists:
@@ -46,12 +46,28 @@ landingContent:
           url: quickstart/use-rest-api.md
         - text: Azure AI Foundry
           url: image/overview.md
-  
-  - title: Responsible use of AI
+
+  - title: How-to guides
     linkLists:
-      - linkListType: concept
+      - linkListType: how-to-guide
+        links:
+        - text: How to create a multi-service resource
+          url: how-to/create-multi-service-resource.md
+
+  - title: Reference
+    linkLists:
+        - linkListType: reference
+          links:
+          - text: Service limits
+            url: service-limits.md
+          - text: Language and region support
+            url: language-region-support.md
+          - text: faq.yml
+            url: faq.yml
+
+  - title: What's new?
+    linkLists:
+      - linkListType: whats-new
         links:
-        - text: Limited access features
-          url: overview.md
-        - text: Transparency note
-          url: overview.md
+        - text: What's new in Azure AI Content Understanding?
+          url: whats-new.md