在“”这个R包不太冷系列——GOplot（功能富集绘图）”
https://mp.weixin.qq.com/s?__biz=MzI1MTM5NDA1NQ==&mid=2247489638&idx=1&sn=a4167a4b30e56eb1d880490132a72470&chksm=e9f2f90ede857018505875949b2c1c4cda027b6788a763c10e8500b7c885d8bdacdd49d4f267&mpshare=1&scene=24&srcid=08054BiwDq0XBficqxc3y2S5&sharer_sharetime=1628136409921&sharer_shareid=2308aaa0a8ba6922fae2d3dac8eeba40&exportkey=ASxQ90VZvIKN8u3%2BitoSzQo%3D&pass_ticket=16GNBRD8kxoZs%2BtzoI%2FkSWAFPGY69ePOd2JXLpdyCY8CaETutg54ZKQCayCiK2jJ&wx_header=0#rd https://mp.weixin.qq.com/s?__biz=MzI1MTM5NDA1NQ==&mid=2247489638&idx=1&sn=a4167a4b30e56eb1d880490132a72470&chksm=e9f2f90ede857018505875949b2c1c4cda027b6788a763c10e8500b7c885d8bdacdd49d4f267&mpshare=1&scene=24&srcid=08054BiwDq0XBficqxc3y2S5&sharer_sharetime=1628136409921&sharer_shareid=2308aaa0a8ba6922fae2d3dac8eeba40&exportkey=ASxQ90VZvIKN8u3%2BitoSzQo%3D&pass_ticket=16GNBRD8kxoZs%2BtzoI%2FkSWAFPGY69ePOd2JXLpdyCY8CaETutg54ZKQCayCiK2jJ&wx_header=0#rd
作者最后修改了GOChord函数参数：GOChord的term图例两列显示，并移动logFC图例位置到最底层中间位置
请问如何操作？请给出详细过程。