link translations to page corresponding to current, fixes vuejs#1037

Author: chrisvfritz

themes/vue/layout/partials/language_dropdown.ejs

@@ -1,11 +1,11 @@
 <li class="nav-dropdown-container language">
   <a class="nav-link">Translations</a><span class="arrow"></span>
   <ul class="nav-dropdown">
-    <li><a href="https://cn.vuejs.org/" class="nav-link" target="_blank">中文</a></li>
-    <li><a href="https://jp.vuejs.org/" class="nav-link" target="_blank">日本語</a></li>
-    <li><a href="https://ru.vuejs.org/" class="nav-link" target="_blank">Русский</a></li>
-    <li><a href="https://kr.vuejs.org/" class="nav-link" target="_blank">한국어</a></li>
-    <li><a href="https://br.vuejs.org/" class="nav-link" target="_blank">Português</a></li>
-    <li><a href="https://fr.vuejs.org/" class="nav-link" target="_blank">Français</a></li>
+    <li><a href="https://cn.vuejs.org/<%- page.path %>" class="nav-link" target="_blank">中文</a></li>
+    <li><a href="https://jp.vuejs.org/<%- page.path %>" class="nav-link" target="_blank">日本語</a></li>
+    <li><a href="https://ru.vuejs.org/<%- page.path %>" class="nav-link" target="_blank">Русский</a></li>
+    <li><a href="https://kr.vuejs.org/<%- page.path %>" class="nav-link" target="_blank">한국어</a></li>
+    <li><a href="https://br.vuejs.org/<%- page.path %>" class="nav-link" target="_blank">Português</a></li>
+    <li><a href="https://fr.vuejs.org/<%- page.path %>" class="nav-link" target="_blank">Français</a></li>
   </ul>
 </li>