Code-Snippets-Functions/Execute a function on a child site/Jetpack/change-sharing-headline-html.txt

function jetpackcom_custom_heading( $headline, $label, $module ) {
        if ( 'sharing' == $module ) {
                $headline = sprintf(
                        '<h1>%s</h1>',
                        $label
                );
        }
        return $headline;
}
add_filter( 'jetpack_sharing_headline_html', 'jetpackcom_custom_heading', 10, 3 );