themes-getlumino/content/includes/footer.blade.php

<footer class="style-4 mt-0 pt-10">
    <div class="container">


        <div class="copywrite text-center">
            <small class="small">
               <a href="https://getlumino.com" class="fw-bold text-decoration-underline">Lumino CMS</a>
            </small>
        </div>
    </div>
</footer>