revert back to Configure storage

original articles are not legacy storage doc

Author: andyzhangx

articles/aks/TOC.yml

@@ -386,7 +386,7 @@
               href: azure-netapp-files.md
             - name: Use Azure Ultra Disks
               href: use-ultra-disks.md
-        - name: Legacy storage
+        - name: Configure storage
           items:
             - name: Azure Blob - dynamic
               href: azure-csi-blob-storage-dynamic.md