Woocommerce category description as subtitle

add_action( 'woocommerce_archive_description', 'wc_category_description' );
    function wc_category_description() {
        if ( is_product_category() ) {
            global $wp_query;
            $cat_id = $wp_query->get_queried_object_id();
            $cat_desc = term_description( $cat_id, 'product_cat' );
            $subtit = ''.$cat_desc.'';
            echo $subtit;
        }
    }