Fixed broken link.

[SVN r38182]

more/version_history.html

@@ -214,7 +214,7 @@
                             <ul>
                               <li>Support for new US/Canada timezone rules and
                                   other bug fixes.  See 
-                                  <a href="../doc/hmtl/date_time/details.html#changes">Change History</a>
+                                  <a href="../doc/html/date_time/details.html#changes">Change History</a>
                                   for details.
                               </li>
                             </ul>