Link to people pages on the website, as they've been removed from the download.

[SVN r43209]

using_concept_check.htm

@@ -176,7 +176,7 @@ BOOST_CONCEPT_ASSERT((BidirectionalIterator<std::list<int>::iterator&gt
     <tr valign="top">
       <td nowrap="nowrap">Copyright &copy; 2000</td>
 
-      <td><a href="../../people/jeremy_siek.htm">Jeremy Siek</a>(<a href=
+      <td><a href="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</a>(<a href=
       "mailto:jsiek@osl.iu.edu">jsiek@osl.iu.edu</a>) Andrew
       Lumsdaine(<a href="mailto:lums@osl.iu.edu">lums@osl.iu.edu</a>), 2007
       <a href="mailto:dave@boost-consulting.com">David Abrahams</a>.</td>