[COSE212] Update lec7

Author: jhnaldo

_data/course/cose212/2025_2.yml

@@ -59,11 +59,11 @@ parts:
     - index: 7
       date: 09/24
       title: First-Class Functions
-      # pdf: slides/lec7.pdf
-      # handout: slides/lec7-handout.pdf
+      pdf: slides/lec7.pdf
+      handout: slides/lec7-handout.pdf
       homework:
         - name: ex04
-          # link: https://github.com/ku-plrg-classroom/docs/tree/main/cose212/fvae
+          link: https://github.com/ku-plrg-classroom/docs/tree/main/cose212/fvae
     - index: 8
       date: 09/29
       title: Lambda Calculus