missing slash

Former-commit-id: 92411fd05e
Former-commit-id: ecba5a84fb

node/src/layouts/default.html.eco

@@ -52,7 +52,7 @@
     <div class="item"><a href="/index.html"><b>Introduction</b></a></div>
     <div class="item"><a href="/download.html"><b>Download</b></a></div>
     <div class="item">
-      <a href="element.html"><b>UI Elements</b></a>
+      <a href="/element.html"><b>UI Elements</b></a>
       <div class="menu">
         <% for element in uiElements: %>
           <div class="<%= if element.id is @document.id then 'active ' %>item"><a href="<%= element.url %>"><%= element.title %></a></div>