fix end of .net section

Author: amerjusupovic

articles/azure-app-configuration/howto-create-snapshots.md

@@ -120,6 +120,8 @@ configurationBuilder.AddAzureAppConfiguration(options =>
 > - `Microsoft.Azure.AppConfiguration.AspNetCore`
 > - `Microsoft.Azure.AppConfiguration.Functions.Worker`
 
+---
+
 ## Manage active snapshots
 
 The page under **Operations** > **Snapshots (preview)** displays two tabs: **Active snapshots** and **Archived snapshots**. Select **Active snapshots** to view the list of all active snapshots in an App Configuration store.