How to add a link to another site in footer.

I need to add a link in the footer that says Site Designed by www.designer.com after the copyright notice. When I had the link in the footer it went to mydomain.com/www.designer.com. How do I add a link after the copyright notice? Here is the current code for the footer:

<?php echo ( get_theme_mod('wpre_footer_text') == '' ) ? ('&copy; '.date_i18n(__('Y','wp-real-estate')).' '.get_bloginfo('name').__('. All Rights Reserved. ','wp-real-estate')) : esc_html( get_theme_mod('wpre_footer_text') ); ?>

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