Update docs/topics/merchants/online/sdd/guide-get-mandate.mdx

Co-authored-by: Max B. <17831738+max-koro@users.noreply.github.com>

Author: ntombing

docs/topics/merchants/online/sdd/guide-get-mandate.mdx

@@ -15,7 +15,7 @@ You can retrieve a specific mandate using the **payment mandate ID**.
 Queries are highly customizable. This guide focuses solely on using the `paymentMandate` query to get the mandate URL.
 
 1.  Call the `paymentMandate` query.
-2.  Check the boxes for `id` (line 2) and `SEPAPaymentDirectDebitMandate` (line 3).
+2.  Add your payment mandate ID (line 2). Include the `SEPAPaymentDirectDebitMandate` fragment with the fields you need (line 3).
 3.  Under `SEPAPaymentDirectDebitMandate`, check the boxes for `id`, `name` and `mandateDocumentUrl` (lines 4-6).
     * `mandateDocumentUrl` allows you to receive a **download URL** in the payload.