Add Introduction for Ming Jun (#683)

Co-authored-by: Jun Yu <[email protected]>
Co-authored-by: Zhao Wei Liew <[email protected]>

data/coreteam_members.yml

@@ -150,3 +150,9 @@ members:
       he prefers the excitement of unexpected detours, courtesy of his charmingly unreliable sense of direction.
       He might be lost, but you can always reach him at <a href="mailto:[email protected]">[email protected]</a>.
 
+  - name: Ming Jun
+    description: |
+      a computer science undergraduate who enjoys building things that look good and do good.
+      When he's not tinkering with code, he's probably out exploring new places or trying (his best) to harmonize in a barbershop choir.
+      Feel free to disturb him at <a href="mailto:[email protected]">[email protected]</a>
+