fix couponsetVC success popup button

@@ -342,7 +342,7 @@ import SwiftEventBus
 
         let alert = UIAlertController(title: alertTitle, message: alertSubTitle, preferredStyle: .alert)
         
-        let cancelButton = UIAlertAction(title: "Ακύρωση", style: .default, handler: { action in
+        let cancelButton = UIAlertAction(title: "Κλείσιμο", style: .default, handler: { action in
             switch action.style{
                 case .default:
                 self.navigationController?.popViewController(animated: true)