Index: wp-admin/credits.php
===================================================================
--- wp-admin/credits.php	(revision 17948)
+++ wp-admin/credits.php	(working copy)
@@ -93,7 +93,7 @@
 }
 
 ?>
-<p class="clear"><?php printf( __( 'Want to see your name in lights on this page? <a href="%s">Get involved in WordPress</a>.' ), 'http://codex.wordpress.org/Contributing_to_WordPress' ); ?></p>
+<p class="clear"><?php echo __( 'Want to see your name in lights on this page? <a href="http://codex.wordpress.org/Contributing_to_WordPress">Get involved in WordPress</a>.' ); ?></p>
 
 </div>
 <?php