[IMP] payment_xendit: registration link

Update the registration link to allow Xendit to track the accounts coming from Odoo

closes #13114

X-original-commit: a8e592c
Signed-off-by: Audrey Vandromme (auva) <[email protected]>

Author: nni-odoo

content/applications/finance/payment_providers/xendit.rst

@@ -15,8 +15,9 @@ local payment methods.
 Configuration on the Xendit Dashboard
 =====================================
 
-#. Create a Xendit account if necessary and log in to the `Xendit Dashboard
-   <https://dashboard.xendit.co>`_.
+#. `Create a Xendit account
+   <https://dashboard.xendit.co/register/1?referral_code=odooid&countr_code=ID>`_ if necessary
+   and log in to the `Xendit Dashboard <https://dashboard.xendit.co>`_.
 #. Check your account mode in the top left corner of the page. Use the :guilabel:`Test Mode` to try
    the integration without charging your customers. Switch to :guilabel:`Live Mode` once you are
    ready to accept payments.