修改返回值格式
原格式：
[{"sport_time_long":140},{"calorie":7000},{"sport_num":3},{"sport_type":1}],
[{"sport_time_long":325},{"calorie":14000},{"sport_num":7},{"sport_type":2}],
[{"sport_time_long":155},{"calorie":4000},{"sport_num":3},{"sport_type":3}],
[{"sport_time_long":125},{"calorie":3500},{"sport_num":2},{"sport_type":4}]```
修改后：
{"sport_time_long":140,"calorie":7000,"sport_num":3,"sport_type":1},
{"sport_time_long":325,"calorie":14000,"sport_num":7,"sport_type":2},
{"sport_time_long":155,"calorie":4000,"sport_num":3,"sport_type":3},
{"sport_time_long":125,"calorie":3500,"sport_num":2,"sport_type":4}
