C181832: code string to code syntax

Localization team has reported source content issue that causes localized version to have broken/different format compared to en-us version.
Description: The reported string is neither localizable nor a hyperlink, as such, it should be formatted as inline code. Kindly see details below.

Author: v-maudel

articles/cost-management-billing/understand/review-partner-agreement-bill.md

@@ -32,7 +32,7 @@ It must be more than 30 days from the day that you subscribed to Azure. Azure bi
 
 ## Sign in to Azure
 
-- Sign in to the Azure portal at https://portal.azure.com.
+- Sign in to the Azure portal at [https://portal.azure.com](https://portal.azure.com).
 
 ## Check access to a Microsoft Customer Agreement