Update people.yml

Author: Jina-Kim

_data/people.yml

@@ -67,9 +67,9 @@ worker:
     profile: Undergraduate Student <br> UMN CS&E
     link: 
   - name: Morris Liu
-    image: images/people/man.png
+    image: images/people/morris.png
     profile: Undergraduate Student <br> UMN CS&E
-    link: 
+    link: https://www.linkedin.com/in/morris-liu/
   - name: Aahan Tyagi
     image: images/people/aahan.jpeg
     profile: Graduate Student <br> UMN CS&E