Link to 4.13.2 release notes

Author: marcphilipp

src/site/xdoc/index.xml

@@ -87,6 +87,7 @@
             <li><a href="https://github.com/junit-team/junit4/wiki/Getting-started">Getting started</a></li>
             <li>Release Notes
               <ul>
+<li><a href="https://github.com/junit-team/junit4/blob/HEAD/doc/ReleaseNotes4.13.2.md">4.13.2</a></li>
 <li><a href="https://github.com/junit-team/junit4/blob/HEAD/doc/ReleaseNotes4.13.1.md">4.13.1</a></li>
 <li><a href="https://github.com/junit-team/junit4/blob/HEAD/doc/ReleaseNotes4.13.md">4.13</a></li>
 <li><a href="https://github.com/junit-team/junit4/blob/HEAD/doc/ReleaseNotes4.12.md">4.12</a></li>