hugo-theme-introduction/layouts/partials/footer.html

<div class="section" id="footer"><!-- Begin Footer section -->
    <div class="container has-text-centered"><!-- Begin Footer container -->
    {{ if .Site.Params.footerText }}
        {{ .Site.Params.footerText | markdownify }}
    {{ else }}
        <span class="footer-text"><a href="https://github.com/vickylai/hugo-theme-introduction" target="_blank" rel="noopener">Introduction</a> theme for <a href="http://gohugo.io/" target="_blank" rel="noopener">Hugo</a>. Made with <a href="https://vickylai.com" target="_blank" rel="noopener"><i class="fa fa-heart"></i> and <i class="fa fa-coffee"></i></a> by open source contributors.</span>
    {{ end }}
    </div><!-- End Footer container -->
</div><!-- End Footer section -->