fix: version mismatch with config

Author: abdul-kaioum

file-manager.php

@@ -1,11 +1,14 @@
 <?php
-if ( ! defined( 'ABSPATH' ) ) exit;
+
+if (! \defined('ABSPATH')) {
+    exit;
+}
 /**
  * Plugin Name: Bit File Manager
  * Plugin URI: https://bitapps.pro/bit-file-manager
  * Author:     File Manager by Bit Form Team
  * Author URI:  https://bitapps.pro
- * Version: 6.8.7
+ * Version: 6.8.8
  * Requires at least: 5.0
  * Requires PHP: 7.4
  * Text domain: file-manager