[ratio.ratio] Order of ratio members

[sdutoit]

Via cxxeditor@:

In 20.10.3 Class template ratio [ratio.ratio] we declare:

namespace std {
 template <intmax_t N, intmax_t D = 1>
 class ratio {
   public:
     typedef ratio<num, den> type;
     static constexpr intmax_t num;
     static constexpr intmax_t den;
 };
}

It would be clearer as:

class ratio {
  public:
    static constexpr intmax_t num;
    static constexpr intmax_t den;
    typedef ratio<num, den> type;
};