modify document verify

src/main/java/com/huiju/estateagents/service/impl/TaBuildingDynamicServiceImpl.java

             responseBean.addError("当前报名人数已满");
             return responseBean;
         }
-        if(null != buildingDynamic.getEnlistEnd() && buildingDynamic.getEnlistEnd().isAfter(LocalDateTime.now())){
+        if(null != buildingDynamic.getEnlistEnd() && buildingDynamic.getEnlistEnd().isBefore(LocalDateTime.now())){
             responseBean.addError("当前活动已结束报名");
             return responseBean;
         }