pr review edits

Author: johnmarco

articles/openshift/howto-secure-openshift-with-front-door.md

@@ -18,7 +18,7 @@ This article explains how to use Azure Front Door Premium to secure access to Az
 
 The following prerequisites are required: 
 
-- You have an existing Azure Red Hat OpenShift cluster. Follow this guide to to [create a private Azure Red Hat OpenShift cluster](howto-create-private-cluster-4x.md).
+- You have an existing Azure Red Hat OpenShift cluster. Follow this guide to [create a private Azure Red Hat OpenShift cluster](howto-create-private-cluster-4x.md).
 
 - The cluster is configured with private ingress visibility.
 
@@ -254,6 +254,6 @@ Because Azure Front Door is a global service, the application can take up to 30
 
 ## Next steps
 
-Create a Azure Web Application Firewall on Azure Front Door using the Azure portal:
+Create an Azure Web Application Firewall on Azure Front Door using the Azure portal:
 > [!div class="nextstepaction"]
 > [Tutorial: Create a Web Application Firewall policy on Azure Front Door using the Azure portal](../web-application-firewall/afds/waf-front-door-create-portal.md)