Add description. And complete russian and spanish languages

about.html

@@ -77,9 +77,9 @@ base_url: "../"
   </div>
   <p class="lead">Community members have translated Bootstrap's documentation into various langauges. None are officially supported and may not always be up to date.</p>
   <ul>
-    <li><a href="http://v3.bootcss.com/">Bootstrap 中文文档</a></li>
-    <li><a href="http://bootstrap.oneskyapp.net/ru">Bootstrap in Russian</a></li>
-    <li><a href="http://bootstrap.oneskyapp.net/es">Bootstrap in Spanish</a></li>
+    <li><a href="http://v3.bootcss.com/">Bootstrap 中文文档 (Chinese)</a></li>
+    <li><a href="http://bootstrap.oneskyapp.net/ru">Bootstrap по-русски (Russian)</a></li>
+    <li><a href="http://bootstrap.oneskyapp.net/es">Bootstrap en Español (Spanish)</a></li>
   </ul>
   <p>Have another language to add, or perhaps a different or better translation? Let us know by <a href="https://github.com/twbs/bootstrap/issues/new">opening an issue</a>.</p>
 </div>