feat: show documents link only when applicable

src/BusProNet/Model/Booking.php

@@ -19,7 +19,7 @@ class Booking
     public ?Travel $travelData = null;
     public ?int $hotelId = null;
     public ?string $hotelName = null;
-    public ?bool $document = null;
+    public bool $hasDocuments = false;
     public ?float $payment = null;
     public ?string $paymentId = null;
     public ?string $paymentType = null;