Revamp challenge formatting

content/challenges/81.md

@@ -80,11 +80,9 @@ japanese:
       - pos: phrase
         text: たまえ
         dictionary: 給え
+song:
+  japanese: "[月]{げっ}[光]{こう}"
+youtube: M7vyKFA2Kzc
+suggester: 猛火妹紅（MochaMoko）
 date: 2022-10-18
 ---
-
-This week's challenge is from the lyrics of [月]{げっ}[光]{こう} ([YouTube](https://www.youtube.com/watch?v=M7vyKFA2Kzc)):
-
-{{< youtube M7vyKFA2Kzc >}}
-
-*This challenge was suggested by **猛火妹紅（MochaMoko）** using the `-h suggest` command.*