fix broken regex link

[SVN r18992]

libs/libraries.htm

@@ -169,7 +169,7 @@ out how to build object libraries, when needed.</p>
     passing references to generic functions, from Jaako J&auml;rvi,
     Peter Dimov, Doug Gregor, and Dave Abrahams.</li>
 
-    <li><a href="regex/index.htm">regex</a> - Regular expression
+    <li><a href="regex/index.html">regex</a> - Regular expression
         library, from John Maddock.</li>
     <li><a href="signals/index.html">signals</a> - managed signals &amp;
          slots callback implementation, from Doug Gregor.</li>
@@ -218,7 +218,7 @@ out how to build object libraries, when needed.</p>
       class template, from Kevlin Henney.</li>
     <li><a href="format/index.htm">format</a> - Type-safe 'printf-like' format 
     operations, from Samuel Krempp.</li>
-    <li><a href="regex/index.htm">regex</a> - Regular expression
+    <li><a href="regex/index.html">regex</a> - Regular expression
         library, from John Maddock</li>
     <li><a href="spirit/index.html">spirit</a> - LL parser framework&nbsp; 
     represents parsers directly as EBNF grammars in inlined C++, from Joel de 
@@ -502,6 +502,6 @@ out how to build object libraries, when needed.</p>
 
 <p>Revised 
 <!--webbot bot="Timestamp" s-type="EDITED"
-s-format="%d %b %Y" startspan -->28 May 2003<!--webbot bot="Timestamp" endspan i-checksum="15126" --></p>
+s-format="%d %b %Y" startspan -->09 Jul 2003<!--webbot bot="Timestamp" endspan i-checksum="15006" --></p>
 </body>
 </html>