minor URL fix in default footer

darcs-hash:20081013172843-7ad00-6dae5026ecd19984103009070f44edeb9ffcc230.gz

lib/tpl/default/footer.html

@@ -19,7 +19,7 @@ $tgt = ($conf['target']['extern']) ? 'target="'.$conf['target']['extern'].'"' :
       <a <?php echo $tgt?> href="<?php echo $license[$conf['license']]['url']?>" rel="license" title="<?php echo $license[$conf['license']]['name']?>"><img src="<?php echo DOKU_BASE.$lic ?>" width="80" height="15" alt="" /></a>
   <?php } ?>
 
-  <a <?php echo $tgt?> href="http://dokuwiki.org/donate" title="Donate"><img src="<?php echo DOKU_TPL; ?>images/button-donate.gif" alt="Donate" width="80" height="15" /></a>
+  <a <?php echo $tgt?> href="http://www.dokuwiki.org/donate" title="Donate"><img src="<?php echo DOKU_TPL; ?>images/button-donate.gif" alt="Donate" width="80" height="15" /></a>
 
   <a <?php echo $tgt?> href="http://www.php.net" title="Powered by PHP"><img src="<?php echo DOKU_TPL; ?>images/button-php.gif" width="80" height="15" alt="Powered by PHP" /></a>