update breadcrumb and landing page

Author: laujan

articles/ai-services/index.yml

@@ -87,10 +87,10 @@ productDirectory:
       summary: Build apps with industry-leading natural language understanding capabilities.
       url: ./language-service/index.yml
     # Card
-    - title: Video Indexer
+    - title: Content Understanding
       imageSrc: ~/reusable-content/ce-skilling/azure/media/ai-services/video-indexer.svg
-      summary: Extract actionable insights from your videos.
-      url: /azure/azure-video-indexer/
+      summary: Transform multimodal data into task-specific insights.
+      url: ./content-understanding/index.yml
      # Card
     - title: Immersive Reader
       imageSrc: ~/reusable-content/ce-skilling/azure/media/ai-services/immersive-reader.svg

breadcrumb/azure-ai/toc.yml

@@ -55,6 +55,9 @@ items:
     - name: Azure AI Search
       tocHref: /azure/search/
       topicHref: /azure/search/
+    - name: Content Understanding
+      tocHref: /azure/ai-services/content-understanding/
+      topicHref: /azure/ai-services/content-understanding/
   - name: Genomics
     tocHref: /azure/genomics/
     topicHref: /azure/genomics/