fix fatal require path error in data.php (#1148)

addresses #1147

Author: VerifiedJoseph

frontend/data.php

@@ -6,7 +6,7 @@
 use IntruderAlert\Exception\ConfigException;
 use IntruderAlert\Helper\Json;
 
-require(dirname(__DIR__) . '/backend/vendor/autoload.php');
+require(__DIR__ . '/backend/vendor/autoload.php');
 
 $data = '';