Add link to Japanese translation of the docs.

doc/_templates/index.html

@@ -58,10 +58,6 @@
   </p>
 
   <h2>Documentation</h2>
-  <p>You may be interested in the very nice
-    <a href="http://matplotlib.sourceforge.net/sampledoc/">tutorial</a> on how to
-    create a customized documentation using Sphinx written by the matplotlib
-    developers.</p>
 
   <table class="contentstable" align="center" style="margin-left: 30px"><tr>
     <td width="50%">
@@ -77,6 +73,14 @@
     </td></tr>
   </table>
 
+  <p>You may also be interested in the very nice
+    <a href="http://matplotlib.sourceforge.net/sampledoc/">tutorial</a> on how to
+    create a customized documentation using Sphinx written by the matplotlib
+    developers.</p>
+
+  <p>There is a <a href="http://sphinx.shibu.jp/">Japanese translation</a>
+    of this documentation, thanks to Yoshiki Shibukawa.</p>
+
   <h2>Get Sphinx</h2>
   <p>
     Sphinx is available as an <a