Update ApiException class namespace.

src/Exceptions/ApiException.php

@@ -1,12 +1,12 @@
 <?php
 
-namespace App\Exceptions;
+namespace PdToolKit\Exceptions;
 
 use Exception;
 use Throwable;
 use Illuminate\Http\JsonResponse;
 
-class ApiException extends \Exception
+class ApiException extends Exception
 {
     /**
      * 返回到接口的验证码