minor updates

Author: JialinXin

articles/azure-signalr/signalr-howto-authorize-managed-identity.md

@@ -20,7 +20,7 @@ This article shows how to configure your Azure SignalR Service resource and code
 
 The first step is to configure managed identities.
 
-This example shows you how to configure a system-assigned managed identity on a virtual machine (VM) by using the Azure portal:
+This example shows you how to configure a system-assigned managed identity on an App Service by using the Azure portal:
 
 1. Access your app's settings in the [Azure portal](https://portal.azure.com) under the **Settings** group in the left navigation pane.
 
@@ -30,17 +30,9 @@ This example shows you how to configure a system-assigned managed identity on a
 
     ![Screenshot that shows where to switch Status to On and then select Save.](../app-service/media/app-service-managed-service-identity/system-assigned-managed-identity-in-azure-portal.png)
 
-To learn how to create user-assigned managed identities, see [Create a user-assigned managed identity](../active-directory/managed-identities-azure-resources/how-manage-user-assigned-managed-identities.md#create-a-user-assigned-managed-identity).
+To learn more how to configure managed identities in other ways for Azure App Service and Azure Functions, see [How to use managed identities for App Service and Azure Functions](../app-service/overview-managed-identity.md).
 
-To learn more about configuring managed identities, see one of these articles:
-
-- [Configure managed identities for Azure resources on a VM using the Azure portal](../active-directory/managed-identities-azure-resources/qs-configure-portal-windows-vm.md)
-- [Configure managed identities for Azure resources on an Azure VM using PowerShell](../active-directory/managed-identities-azure-resources/qs-configure-powershell-windows-vm.md)
-- [Configure managed identities for Azure resources on an Azure VM using the Azure CLI](../active-directory/managed-identities-azure-resources/qs-configure-cli-windows-vm.md)
-- [Configure managed identities for Azure resources on an Azure VM using templates](../active-directory/managed-identities-azure-resources/qs-configure-template-windows-vm.md)
-- [Configure a VM with managed identities for Azure resources using an Azure SDK](../active-directory/managed-identities-azure-resources/qs-configure-sdk-windows-vm.md)
-
-To learn more how to configure managed identities for Azure App Service and Azure Functions, see [How to use managed identities for App Service and Azure Functions](../app-service/overview-managed-identity.md).
+To learn more about configuring managed identities on an Azure VM, see [Configure managed identities on Azure virtual machines (VMs)](../active-directory/managed-identities-azure-resources/qs-configure-portal-windows-vm.md)
 
 ## Add role assignments in the Azure portal