fix: date format

Author: RulerOfCakes

src/content/blog/2025-04-14-MCC.md

@@ -1,7 +1,7 @@
 ---
 title: Midnight Code Cup 2025
 author: Andrew Moon
-pubDatetime: 2025-04-014T18:00:00+09:00
+pubDatetime: 2025-04-14T18:00:00+09:00
 postSlug: 2025-04-14-MCC
 featured: true
 draft: false