Update Haojia Sun URL

Author: JudySun233

_data/staff.yml

@@ -38,7 +38,7 @@ TAs:
 
     - name: Haojia Sun
       email: haojias@andrew.cmu.edu
-      url:
+      url: https://www.linkedin.com/in/haojia-judy-sun/
       office-hours: Wednesday 2-3pm, GHC 8228
       image: staff/haojiasun.jpg
 
@@ -65,4 +65,4 @@ TAs:
       url: https://www.linkedin.com/in/zhuoming-chen-325075234/
       office-hours: Friday 3-4pm, GHC 8228
       image: staff/zhuomingchen.jpg
-    
+