Missing "<hr>" tag in books.html

Hi,

All others web pages of OpenBSD project have an tag <hr> at the end,
but books.html is missing it.

Diff:

--- books.html.orig	Mon Jun  2 20:23:03 2008
+++ books.html	Mon Jun  2 20:24:50 2008
@@ -537,6 +537,7 @@ glossary.
 from Amazon</a>]
 </dl>

+<hr>
 <a href="index.html"><img height="24" width="24" src="back.gif"
border="0" alt="OpenBSD"></a>
 <a href="mailto:[email protected]">[email protected]</a>&nbsp;&nbsp;
 <small>(public discussion list for OpenBSD web site style and content)</small>


Thank you!