fix(bil): info about alerts

pages/billing/how-to/use-billing-alerts.mdx

@@ -49,7 +49,11 @@ Your budget, denominated in euros, represents the limit for your expenses. Simul
     You may configure up to 10 billing alerts based on your monthly budget. To create a new billing alert, click **+ Add alert**, and repeat the steps above.
 
   <Message type="important">
-    Billing alerts only provide a rough estimate of what may be charged to your monthly invoice. Additional costs related to your usage before the alert is triggered may still appear on your invoice after the alert is generated. Only your monthly invoice is considered legally valid.
+    - Billing alerts only provide a rough estimate of what may be charged to your monthly invoice. Additional costs related to your usage before the alert is triggered may still appear on your invoice after the alert is generated. Only your monthly invoice is considered legally valid.
+    - The alerts take into discounts into consideration. This means that you will receive an alert if you have consumed a percentage of your budget regardless if discounts are applied or not. For example:
+        - If you have a discount of €100 applied to your account,
+        - and set an alert to be triggered when you reach 100% of an €150 budget,
+        - once you have spent €50 more than your €100 discount, and reached a total of €150 in consumption (100%), you will receive the alert.
   </Message>
 
 ### Webhook API Call