Add LinkedIn profile for Han Kurt

Author: hankurt

_data/members.yml

@@ -79,6 +79,7 @@
 - name: Han Kurt
   position: Visiting Ph.D Candidate
   avatar: /images/people/Han-Kurt.png
+  linkedin: https://www.linkedin.com/in/hankurt/
 
 - name: Luca Gazolla
   position: Visiting Ph.D Candidate