Update zh/part5c.md: a markdown format error

The markdown comment becomes uncommented, resulting in the same content being repeated twice

Author: Juemuren

src/content/5/zh/part5c.md

@@ -650,7 +650,7 @@ test('<NoteForm /> updates parent state and calls onSubmit', async() => {
 })
 ```
 
-In the middle of running the tests, the following is printed
+<!-- In the middle of running the tests, the following is printed -->
 在运行测试的过程中，打印以下内容
 
 ```