fixed title case

David Curwin · David Curwin · commit fa77baacb039 · 2019-11-13T21:11:56.000+02:00
diff --git a/articles/backup/backup-mabs-files-applications-azure-stack.md b/articles/backup/backup-mabs-files-applications-azure-stack.md
@@ -1,5 +1,5 @@
 ---
-title: Back up Files in Azure Stack VMs - Azure Backup
+title: Back up files in Azure Stack VMs - Azure Backup
 description: Use Azure Backup to back up and recover Azure Stack files and applications to your Azure Stack environment.
 ms.reviewer: adigan
 author: dcurwin
