Add Yikun photo

Signed-off-by: Chris Abraham <[email protected]>

Author: cjyabraham

assets/images/tac/yikun-jiang.jpg

@@ -214,7 +214,7 @@ <h3>Xavier Dupré, Microsoft</h3>
     </div>
     <div class="row board-member">
       <div class="col-md-3">
-        <img src="/assets/images/tac/generic-avatar.svg" alt="Yikun Jiang">
+        <img src="/assets/images/tac/yikun-jiang.jpg" alt="Yikun Jiang">
       </div>
       <div class="col-md-9">
         <h3>Yikun Jiang, Huawei</h3>