themes-wordpress/vetro/patterns/designed-with-wordpress.php

<?php
/**
 * Title: Designed with WordPress 
 * Slug: vetro/designed-with-wordpress
 * Inserter: no
 */
?>

<!-- wp:paragraph {"style":{"typography":{"lineHeight":"1","fontStyle":"normal","fontWeight":"500"}},"fontSize":"small"} -->
<p class="has-small-font-size" style="font-style:normal;font-weight:500;line-height:1"><?php echo esc_html__( 'Designed with ', 'vetro' ); ?><a rel="noreferrer noopener" href="http://wordpress.org" data-type="URL" data-id="wordpress.org" target="_blank"><?php echo esc_html__( 'WordPress.', 'vetro' ); ?></a></p>
<!-- /wp:paragraph --><?php