fix purchase status path

Author: alibo

src/Models/Requests/PurchaseStatusRequest.php

@@ -39,7 +39,7 @@ function __construct($package = null, $productId = null, $purchaseToken = null)
      */
     public function getUri() {
 
-        $uri = $this->getApiConfig()->getCancelSubscriptionPath();
+        $uri = $this->getApiConfig()->getPurchasePath();
 
         $toReplace = [
             '{package}'         => $this->getPackage(),