Fix PGT details

Author: MattyTheHacker

_data/committee/2025-26.yaml

@@ -132,10 +132,10 @@ people:
       lorem impsum
 
   - name: Maddy Lardner
-    discordtag: itjoe
-    pronouns: He/Him
-    role: Post-Graduate (Research) Rep
-    picture: /assets/committee/2025-26/mini/joe.png
+    discordtag: darkbanshee
+    pronouns: She/her
+    role: Post-Graduate (Taught) Rep
+    picture: /assets/committee/2025-26/mini/maddy.png
     start-date: 22/10/2025
     bio: >
       lorem impsum