Job Alerts HTML Email

I found out

I need to edit this file
wp-job-manager-alerts/includes/class-wp-job-manager-alerts-notifier.php

and just before wp_email()

add_filter( 'wp_mail_content_type', 'set_html_content_type' );

and also add this function

function set_html_content_type() {

	return 'text/html';
}