fix URL for 2.0.22

Author: nmathewson

index.html

@@ -136,7 +136,7 @@ <h3>Download&ndash;Stable releases</h3>
    like to track the latest development versions and report bugs in them.
 
    <ul class="tight">
-   <li><a class="latest" href="https://github.com/downloads/libevent/libevent/libevent-2.0.22-stable.tar.gz">libevent-2.0.22-stable.tar.gz</a> [<a href="https://github.com/downloads/libevent/libevent/libevent-2.0.22-stable.tar.gz.asc">GPG Sig</a>] <a href="https://raw.github.com/libevent/libevent/release-2.0.22-stable/ChangeLog">ChangeLog</a><br>Released 2014-01-05
+   <li><a class="latest" href="https://sourceforge.net/projects/levent/files/libevent/libevent-2.0/libevent-2.0.22-stable.tar.gz">libevent-2.0.22-stable.tar.gz</a> [<a href="https://sourceforge.net/projects/levent/files/libevent/libevent-2.0/libevent-2.0.22-stable.tar.gz.asc">GPG Sig</a>] <a href="https://raw.github.com/libevent/libevent/release-2.0.22-stable/ChangeLog">ChangeLog</a><br>Released 2014-01-05
      <ul>
        <li>Changelog to follow
      </ul>