Fix doc as spotted by Nicholas Miller in online doc.

    <title>Windows Tuning</title>

    <ul>

      <li><p>If more than a few dozen piped loggers are used on an operating system 

      instance is necesar, scaling up the "desktop heap" is often necessary. For

      instance, scaling up the "desktop heap" is often necessary. For

      more detailed information, refer to the <a href="../logs.html#piped"

      >piped logging</a> documntation.</p></li>

      >piped logging</a> documentation.</p></li>

    </ul>

  </section>

</manualpage>