add netlify tags to gravity forms

functions.php

//Add Netflify tag to GForms
add_filter( 'gform_form_tag', 'form_tag_netlify', 10, 2 );
function form_tag_netlify( $form_tag, $form ) {
    $form_name = $form['title'];
    $form_tag = str_replace( "<form ", "<form name='{$form_name}' data-netlify='true' action='/pages/success' ", $form_tag );
    return $form_tag;
}