fix link

Author: msmimart

articles/active-directory-b2c/faq.yml

@@ -166,7 +166,7 @@ sections:
       - question: |
           Why does my Azure AD B2C bill show phone charges named "Microsoft Entra External ID?"
         answer: |
-          Following the new [billing model](https://azure.microsoft.com/en-us/pricing/details/active-directory-b2c/) for Azure AD External Identities SMS Phone Authentication, you may notice a new name on your bill. Previously, Phone MFA was billed as "Azure Active Directory B2C - Basic 1 Multi-Factor Authentication." Now you’ll see the following names based on your [country or region pricing tier](https://aka.ms/B2CSMSCountries):
+          Following the new [billing model](https://azure.microsoft.com/pricing/details/active-directory-b2c/) for Azure AD External Identities SMS Phone Authentication, you may notice a new name on your bill. Previously, Phone MFA was billed as "Azure Active Directory B2C - Basic 1 Multi-Factor Authentication." Now you’ll see the following names based on your [country or region pricing tier](https://aka.ms/B2CSMSCountries):
           
           * Microsoft Entra External ID - Phone Authentication Low Cost 1 Transaction
           * Microsoft Entra External ID - Phone Authentication Mid Low Cost 1 Transaction