Merge pull request #49536 from mattu0119/patch-2

Fix typo

Author: ktoliver

articles/backup/backup-configure-vault.md

@@ -47,7 +47,7 @@ The data that's available for backup depends on where the agent is installed.
 If your machine has limited internet access, ensure that firewall settings on the machine or proxy allow the following URLs and IP addresses:
 
 * URLs
-    * `www\.msftncsi.com`
+    * `www.msftncsi.com`
     * `*.Microsoft.com`
     * `*.WindowsAzure.com`
     * `*.microsoftonline.com`