Try this way:
function my_wp_about_author_social($socials){
// Here we add some social profiles
$socials [‘MySocial’] = array(‘title’=>’MySocial’, ‘link’ =>’http://www.mysocial.com/%%username%%’, ‘icon’=> WPAUTHORURL_URL .’images/mysocial.png’);
// Here example if you need disable some build-in socials. Delete this line if you dont need it!
unset ($socials[ ‘mysocial’]);
return $socials;
}
add_filter(‘wp_about_author_get_socials’ , ‘my_wp_about_author_social’ );