fixed headers

Author: Michael Bender

articles/virtual-network/ip-services/routing-preference-portal.md

@@ -32,7 +32,7 @@ By default, the routing preference for public IP address is set to the Microsoft
 
 [!INCLUDE [quickstarts-free-trial-note](~/reusable-content/ce-skilling/azure/includes/quickstarts-free-trial-note.md)]
 
-[!INCLUDE [azure-cli-prepare-your-environment.md](~/reusable-content/azure-cli/azure-cli-prepare-your-environment.md)]
+[!INCLUDE [azure-cli-prepare-your-environment-no-header.md](~/reusable-content/azure-cli/azure-cli-prepare-your-environment-no-header.md)]
 
 - This article requires version 2.0.49 or later of the Azure CLI. If using Azure Cloud Shell, the latest version is already installed.