chore: update site maint contact

Author: zhudotexe

alumni.md

@@ -4,7 +4,7 @@ title: Alumni
 order: 2
 ---
 <h1>Alumni</h1>
-Missing from this list? New position? Contact <a href="http://veronica320.github.io">Veronica Qing Lyu</a> for help.
+Missing from this list? New position? Contact <a href="mailto:[email protected]">Andrew Zhu</a> for help.
 
 <h2>2020's</h2>
 <p>