chore: format

Author: appleboy

example30-context-timeout/answer/main.go

@@ -74,5 +74,4 @@ func main() {
 	} else {
 		fmt.Printf("res %v", res)
 	}
-
 }

example30-context-timeout/question/main.go

@@ -47,5 +47,4 @@ func main() {
 	} else {
 		fmt.Printf("res %v", res)
 	}
-
 }