update rest api

Author: laujan

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

@@ -58,7 +58,7 @@ landingContent:
       - linkListType: whats-new
         links:
         - text: "What's new in Azure AI Content Understanding?"
-          url: whats-new.md         
+          url: whats-new.md
 
   - title: Reference
     linkLists:
@@ -68,6 +68,6 @@ landingContent:
             url: service-limits.md
           - text: Language and region support
             url: language-region-support.md
-            
 
-  
+
+