Fix solution

[sudobooo]

The previous solution returned "JonhSmith"—incorrect because the exercise needs to return "Jonh Smith". I used string concatenation rather than string interpolation because, at that level, people can understand this solution.

[fey]

@sgmdlt посмотри вместе с автором.

[sgmdlt]

Hi, why did you decide that the solution was incorrect if it passed the tests? Look in the documentation, fmt.Println(), with multiple arguments prints them separated by a space.