Customize wp dashboard footer text

function dct_custom_footer() {
    add_filter( 'admin_footer_text', 'dct_footer_text', 11 );
}

function dct_footer_text($content) {
    return '<b>Developed by <a href="http://www.thedct.com" target="_blank">DCT IT</a></b>';
}
add_action( 'admin_init', 'dct_custom_footer' );