Merge pull request #245458 from khdownie/kendownie071923

updating toc

Author: v-regandowner

articles/storage/files/TOC.yml

@@ -25,8 +25,6 @@
     href: files-smb-protocol.md
   - name: NFS file shares
     href: files-nfs-protocol.md
-  - name: Identity-based authentication and authorization
-    href: storage-files-active-directory-overview.md
   - name: Networking considerations for direct access
     href: storage-files-networking-overview.md
   - name: Data protection
@@ -57,6 +55,8 @@
       href: storage-files-scale-targets.md
   - name: Authentication and authorization
     items:
+    - name: Identity-based authentication overview
+      href: storage-files-active-directory-overview.md
     - name: Authorize with Azure AD
       href: authorize-oauth-rest.md
   - name: Understanding billing