Move Yen to inactive core team members

about.html

@@ -21,7 +21,6 @@
 <p>Core team:</p>
 
 <ul>
-<li><a href="https://github.com/yan12125">Yen Chi Hsuan</a>: core developer.</li>
 <li><a href="https://github.com/remitamine">Remita Amine</a>: core developer.</li>
 <li><a href="https://github.com/dstftw">Sergey M.</a>: core developer, maintainer since 2016.</li>
 </ul>
@@ -33,6 +32,7 @@
 <li><a href="https://github.com/phihag">Philipp Hagemeister</a>: core developer, maintainer 2011-2016.</li>
 <li><a href="https://github.com/FiloSottile">Filippo Valsorda</a>: core developer, Windows build, testing.</li>
 <li><a href="https://github.com/jaimeMF">Jaime Marquínez Ferrándiz</a>: core developer.</li>
+<li><a href="https://github.com/yan12125">Yen Chi Hsuan</a>: core developer.</li>
 <li><a href="https://github.com/naglis">Naglis Jonaitis</a>: core developer.</li>
 <li><a href="https://github.com/pulpe">pulpe</a>: core developer.</li>
 </ul>