Update README.md

Author: glibnub

README.md

@@ -94,7 +94,7 @@ This tutorial only covers the case the Web App calls a Web API on behalf of a us
 
 - Install .NET Core for Windows by following the instructions at [dot.net/core](https://dot.net/core), which will include [Visual Studio 2017](https://aka.ms/vsdownload).
 - An Internet connection
-- An Azure Active Directory (Azure AD) tenant. For more information on how to get an Azure AD tenant, see [How to get an Azure AD tenant](https://azure.microsoft.com/en-us/documentation/articles/active-directory-howto-tenant/)
+- An Azure Active Directory (Azure AD) tenant. For more information on how to get an Azure AD tenant, see [How to get an Azure AD tenant](https://docs.microsoft.com/azure/active-directory/develop/quickstart-create-new-tenant)
 - A user account in your Azure AD tenant, or a Microsoft personal account
 
 ### Step 1:  Clone or download this repository