Update Sofia Kirsanova image path

Author: Sofia Kirsanova

_data/people.yml

@@ -53,7 +53,7 @@ phd:
     profile: UMN CS&E
     link: https://yoo-un-ee.github.io/
   - name: Sofia Kirsanova
-    image: images/people/sofia.jpg
+    image: images/people/sofia_kirsanova.jpg
     profile: UMN CS&E
     link: https://sofiakirsanova.github.io/
   - name: Janghyeon Lee