Update the thread links in the generated getting started documentation.

[SVN r43876]

more/getting_started/unix-variants.html

@@ -187,7 +187,7 @@ before building and installing it)</li>
 <li><a class="reference external" href="../../libs/regex/index.html">Boost.Regex</a></li>
 <li><a class="reference external" href="../../libs/serialization/index.html">Boost.Serialization</a></li>
 <li><a class="reference external" href="../../libs/signals/index.html">Boost.Signals</a></li>
-<li><a class="reference external" href="../../doc/html/thread/build.html#thread.build">Boost.Thread</a></li>
+<li><a class="reference external" href="../../doc/html/thread.html">Boost.Thread</a></li>
 <li><a class="reference external" href="../../libs/wave/index.html">Boost.Wave</a></li>
 </ul>
 <p>A few libraries have optional separately-compiled binaries:</p>

more/getting_started/windows.html

@@ -180,7 +180,7 @@ before building and installing it)</li>
 <li><a class="reference external" href="../../libs/regex/index.html">Boost.Regex</a></li>
 <li><a class="reference external" href="../../libs/serialization/index.html">Boost.Serialization</a></li>
 <li><a class="reference external" href="../../libs/signals/index.html">Boost.Signals</a></li>
-<li><a class="reference external" href="../../doc/html/thread/build.html#thread.build">Boost.Thread</a></li>
+<li><a class="reference external" href="../../doc/html/thread.html">Boost.Thread</a></li>
 <li><a class="reference external" href="../../libs/wave/index.html">Boost.Wave</a></li>
 </ul>
 <p>A few libraries have optional separately-compiled binaries:</p>