改一下bug

app/Service/StatisticService.php

@@ -239,7 +239,7 @@ class StatisticService extends Service
         }
 
         foreach ($item_month_list as $k => $v) {
-            $item_month_list[$k]['work_hours'] = round($v['work_minutes']  / 60);
+            $item_month_list[$k]['work_hours'] = round($v['work_minutes']  / 60,2);
             $item_month_list[$k]['total_hours'] = round($v['total_min']  / 60);
             unset($item_month_list[$k]['work_minutes']);
         }