Fixing TOC.

Author: roygara

articles/storage/elastic-san/TOC.yml

@@ -56,7 +56,7 @@ items:
     href: elastic-san-expand.md
   - name: Use volume snapshots
     href: elastic-san-snapshots.md
-  - name: Backup sdf
+  - name: Backup
     items:
     - name: Configure backup for Elastic SAN volumes
       href: ../../backup/azure-elastic-san-backup-configure.md?toc=/azure/storage/elastic-san/toc.json&bc=/azure/storage/elastic-san/breadcrumb/toc.json