[Backend] Correctif id download documents

ShopBundle/Resources/views/backend/order/macros.html.twig

@@ -424,7 +424,7 @@
                 <td>Facture</td>
                 <td>${orderDocument.reference}</td>
                 <td>
-                    <a :href="'./?entity=Document&action=downloadInvoice&id='+i" class="btn-sm btn-default">Télécharger</a>
+                    <a :href="'./?entity=Document&action=downloadInvoice&id='+orderDocument.id" class="btn-sm btn-default">Télécharger</a>
                 </td>
             </tr>
         </template>