(Azure CXP) re-link to correct page

resolves https://github.com/MicrosoftDocs/azure-docs/issues/102107

Author: mikeurnun

includes/functions-quickstart-previous-topics.md

@@ -5,4 +5,4 @@ ms.topic: include
 ms.date: 09/04/2018
 ms.author: glenga
 ---
-This topic uses as its starting point the resources created in [Create your first function from the Azure portal](../articles/azure-functions/functions-get-started.md). If you haven't already done so, please complete these steps now to create your function app.
+This topic uses as its starting point the resources created in [Create your first function from the Azure portal](../articles/azure-functions/functions-create-function-app-portal.md). If you haven't already done so, please complete these steps now to create your function app.