Fixed syntax error with 'or' operator.

Author: Juan-Pablo-Castillo-Velasquez

db/access.php

@@ -23,7 +23,7 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-defined('MOODLE_INTERNAL') or die();
+defined('MOODLE_INTERNAL') || die();
 
 $capabilities = [
     // Manage custom elements.