Update PHPIDS 0.6.3.1

Due to a change of the MODx plugin interpreter I needed to change a line of code inside the plugin. MODx misinterprets /** <?php /** because it should not have parsed the comment, but it does parse it and throws an error.

The /** <?php /** was used, to say Zend Studio, that the file contains PHP code and to tell PHPDocumentator, that the following lines should be used as documentation.