add new doc to toc

Author: PatrickFarley

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

@@ -7,6 +7,8 @@ items:
       - name: What is Azure AI Content Understanding?
         displayName: document, text, images, video, audio, multimodal, visual, structured, content, field, extraction, content filtering, filter
         href: overview.md
+      - name: Choose the right tool for document processing
+        href: choosing-right-ai-tool.md
       - name: What's new
         displayName: changelog, release, updates, previews
         href: whats-new.md
@@ -63,6 +65,7 @@ items:
         displayName: video, audio, voice, recognition, synthesis, speaker, identification, verification, diarization, transcription, translation, language, understanding, sentiment, analysis, emotion, detection, pronunciation, model
   - name: Concepts
     items:
+    - name:
     - name: Analyzers
       items:
         - name: Analyzer templates in Azure AI Foundry