問題の修正

rurun418 · rurun418 · commit c5d75e56466d · 2026-05-09T04:57:19.000+09:00
diff --git a/docs/cpp/chapter-6/problems/prime-check.md b/docs/cpp/chapter-6/problems/prime-check.md
@@ -1,4 +1,3 @@
-````markdown
 # 6.Q Prime Check（★★☆）
 
 ## 問題
@@ -115,5 +114,3 @@ int main() {
 ```
 
 :::
-
-````
