TOC and metadata update

Author: roygara

articles/storage/files/TOC.yml

@@ -173,8 +173,10 @@
       href: ../common/storage-network-security.md?toc=%2fazure%2fstorage%2ffiles%2ftoc.json
     - name: Require secure transfer
       href: ../common/storage-require-secure-transfer.md?toc=%2fazure%2fstorage%2ffiles%2ftoc.json
-    - name: Enable Azure AD authentication over SMB
+    - name: Enable Azure AD DS authentication over SMB
       href: storage-files-active-directory-enable.md
+    - name: Enable AD authentication over SMB
+      href: storage-files-active-directory-domain-services-enable.md
     - name: Enable secure TLS for Azure Storage client
       href: ../common/storage-security-tls.md
   - name: Troubleshoot

articles/storage/files/storage-files-active-directory-domain-services-enable.md

@@ -1,6 +1,6 @@
 ---
 title: Enable Active Directory authentication over SMB for Azure Files
-description: Learn how to enable identity-based authentication over SMB for Azure file shares through Azure Active Directory Domain Services. Your domain-joined Windows virtual machines (VMs) can then access Azure file shares by using Azure AD credentials. 
+description: Learn how to enable identity-based authentication over SMB for Azure file shares through Active Directory. Your domain-joined Windows virtual machines (VMs) can then access Azure file shares by using AD credentials. 
 author: roygara
 ms.service: storage
 ms.topic: conceptual