Fix oder => order syntax

lacagette_addons/pos_meal_voucher/static/src/js/screens.js

@@ -14,8 +14,8 @@ odoo.define("pos_meal_voucher.screens", function (require) {
     screens.ScreenWidget.include({
         barcode_meal_voucher_payment_action: function (code) {
 
-            var oder = this.pos.get_order();
-            if(!oder.paper_meal_vouche_number_already_used(code.code)){
+            var order = this.pos.get_order();
+            if(!order.paper_meal_vouche_number_already_used(code.code)){
                 // Display the payment screen, if it is not the current one.
                 if (this.pos.gui.current_screen.template !== "PaymentScreenWidget"){
                     this.gui.show_screen("payment");