Fixed 1.31 release date typo.

[SVN r21713]

index.htm

@@ -119,7 +119,7 @@
                         </center>
                         <!-- Search Google -->
                         <h2><a name="Latest News">Latest News</a></h2>
-                        <p>January 26, 2003 - Version 1.31.0</p>
+                        <p>January 26, 2004 - Version 1.31.0</p>
                         <ul>
                            <li>
                               A unified <a href="more/license_info.html">Boost Software License</a> has been