Go中的装饰器，代码风格很重要

So I have a decorator-like function to format functions output as markdown code block. Someting like this:

func mdFormat(f func() string) (func() string) {

    return func() string {
        return(fmt.Sprintf("```
%s
```", f()))
    }
}

Is it actually OK to do it with such function or is there any better solutions that I don't see?