Add Matthew to alumni (#414)

_members/matthew-scott-tan.md

@@ -5,7 +5,7 @@ name_degree: Matthew Scott Tan
 photo: matthew-scott-tan.png
 
 job_title: Undergraduate Student in Mathematics and Statistics
-role: student # or postdoc, administration, staff, alumni, etc.
+role: alumni # or postdoc, administration, staff, alumni, etc.
 
 services:
   #home: https://member-website.com
@@ -14,6 +14,6 @@ services:
   linked-in: https://www.linkedin.com/in/matthew-scott-tan/
 
 start: September 2023
-end:
+end: December 2023
 ---
 Matthew is an undergraduate student concentrating in Mathematics and Statistics at Harvard College. Previously, he was a Specialist (Intelligence) in the Singapore Armed Forces, focusing on imagery and geospatial analysis. At the HIDIVE lab, he is using computational and mathematical methods to process single-cell resolution omics and imaging data.