Update toc.yml

Author: eric-urban

articles/ai-services/translator/toc.yml

@@ -6,7 +6,7 @@ items:
   items:
   - name: What is Translator Service?
     displayName: features,develop,development,free
-    href: translator-overview.md
+    href: overview.md
   - name: Create a Translator resource
     displayName: endpoint,key,portal,azure,authentication,delete,resource
     href: create-translator-resource.md