fix reference link

Author: duongau

articles/active-directory-b2c/custom-domain.md

@@ -108,7 +108,7 @@ Follow these steps to create an Azure Front Door:
 
 1. To choose the directory that contains the Azure subscription that you’d like to use for Azure Front Door and *not* the directory containing your Azure AD B2C tenant select the **Settings** icon in the top menu to switch to your Azure AD B2C tenant from the **Directories + subscriptions** menu.
 
-1. Follow the steps in [Create Front Door profile - Quick Create](../frontdoor/create-front-door-portal.md#create-front-door-profile---quick-create) to create a Front Door for your Azure AD B2C tenant using the following settings: 
+1. Follow the steps in [Create Front Door profile - Quick Create](../frontdoor/create-front-door-portal.md#create-an-azure-front-door-profile) to create a Front Door for your Azure AD B2C tenant using the following settings: 
 
 
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