js and css file path

Hi.

I found that the file path to the js/css file is wrong.

By default, it outputs file path like below

wp-content/plugins/pro-sites/pro-sites-files//css/checkout.css?ver=3.0.2
wp-content/plugins/pro-sites/pro-sites-files//js/checkout.js?ver=3.0.2

I changed line 634, 635, 636 from

wp_enqueue_script('psts-checkout', $this->plugin_url . '/js/checkout.js', array('jquery'), $this->version );
    if ( !current_theme_supports( 'psts_style' ) )
			wp_enqueue_style('psts-checkout', $this->plugin_url . '/css/checkout.css', false, $this->version );

to

wp_enqueue_script('psts-checkout', $this->plugin_url . 'js/checkout.js', array('jquery'), $this->version );
    if ( !current_theme_supports( 'psts_style' ) )
			wp_enqueue_style('psts-checkout', $this->plugin_url . 'css/checkout.css', false, $this->version );