[FIX] account_edi_ubl_cii: fix typo in node name

Fix typo in node name introduced after fixing a failed fw-port:
e5a20e61

closes odoo/odoo#117801

Signed-off-by: Quentin De Paoli <qdp@odoo.com>

addons/account_edi_ubl_cii/models/account_edi_xml_cii_facturx.py

@@ -277,7 +277,7 @@ class AccountEdiXmlCII(models.AbstractModel):
         # ==== invoice_date_due ====
 
         invoice_date_due_node = tree.find('.//{*}SpecifiedTradePaymentTerms/{*}DueDateDateTime/{*}DateTimeString')
-        if invoice_date_due_node is not None and invoice_date_node.text:
+        if invoice_date_due_node is not None and invoice_date_due_node.text:
             date_str = invoice_date_due_node.text
             date_obj = datetime.strptime(date_str, DEFAULT_FACTURX_DATE_FORMAT)
             invoice_form.invoice_date_due = date_obj.strftime(DEFAULT_SERVER_DATE_FORMAT)