bug fix

*Pak 40 fix

***全面修改了AT炮(包括坦克炮)精度和射程适当进行了调整:
精度略微下调(精度会随着开火次数变得准确);
目前平均提升AP射程10m~20m;

***The accuracy and range of AT guns (including tank guns) have been comprehensively modified and appropriately adjusted:
Slightly lower accuracy (accuracy will become more accurate with the number of shots fired);
At present, the average increase in AP range is 10-20m;

***add wp smoke tag

kwk36,39 fix

*****AT gun

火炮对单位的攻击选择优化
Optimization of artillery attack selection for units