FacetWP - change flyout layout HTML

functions.php

<?php

// Add to your (child) theme's functions.php

add_action( 'wp_head', function() {
?>
<script>
(function($) {
    $(function() {
        if ('object' != typeof FWP) return;

        FWP.hooks.addFilter('facetwp/flyout/facet_html', function( facet_html ) {
            return facet_html.replace('<h3>{label}</h3>', '<p>{label}</p>');
        });
    });
})(jQuery);
</script>
<?php
}, 100 );