Update Minji Joung's year to 2026 in Alumni.md

Author: Hyundol

people/Alumni.md

@@ -75,7 +75,7 @@ title: Alumni
 * [Junghyun Park(박정현, 2025)](/people//ParkJungHyun)
 * [Hayeong Park(박하영, 2025)](/people/ParkHayeong)
 * [Qihua Wei(위기화, 2025)](/people/WeiQihua)
-* [Minji Joung(정민지)](./MinjiJoung)
+* [Minji Joung(정민지, 2026)](/people/MinjiJoung)
 
 ### Undergraduate Researcher 
 * Wongyeong Choi(최원경)