added AL image to people page

Author: jeremymanning

data/people.xlsx

@@ -144,7 +144,7 @@ <h3>andrew richardson | undergrad</h3>
                     <p>Andrew is a Mathematics and Economics double major from Minneapolis, MN. Outside of academics, he enjoys playing tennis and soccer.</p>
                 </div>
                 <div class="person-card">
-                    <img src="images/people/placeholder.png" alt="angelyn liu">
+                    <img src="images/people/angelyn_liu.png" alt="angelyn liu">
                     <h3>angelyn liu | undergrad</h3>
                     <p>Angelyn is a member of the class of 2028 from the Bay Area, CA, planning on majoring in cognitive science. In her free time, she enjoys singing, reading, puzzle games, and creative writing.</p>
                 </div>