docs: Fix list template link

docs/layouts/_default/list.html

@@ -2,7 +2,7 @@
 <ul style="margin-top: 20px">
     {{ range .Data.Pages }}
     <li>
-        <a href="{{ index .Params " link " }}">{{ .Title }}</a> <em>Updated {{ .Lastmod.Format "Mon, Jan 2, 2006" }}</em>
+         <a href="{{ .Permalink }}">{{ .Title }}</a> <em>Updated {{ .Lastmod.Format "Mon, Jan 2, 2006" }}</em>
     </li>
     {{ end }}
 </ul>