change series slug

function change_series_slug( $taxonomy, $object_type, $args ) {
    if ( 'jnews-series' == $taxonomy ) {
        remove_action( current_action(), __FUNCTION__ );
        $args['rewrite'] = array( 'slug' => 'program' );
        register_taxonomy( $taxonomy, $object_type, $args );
    }
}
add_action( 'registered_taxonomy', 'change_series_slug', 10, 3 );