fix(layout): adapt to the latest hugo version

layouts/partials/footer.html

@@ -1,5 +1,5 @@
 	<footer id="site-footer" class="section-inner thin animated fadeIn faster">
 		<p>
-			&copy; {{ now.Format "2006" }} <a href="{{ .Site.BaseURL }}">{{ .Site.Author.name }}</a>{{ .Site.Params.footerCopyright | safeHTML }}
+			&copy; {{ now.Format "2006" }} <a href="{{ .Site.BaseURL }}">{{ .Site.Params.author.name }}</a>{{ .Site.Params.footerCopyright | safeHTML }}
 		</p>
 	</footer>