Update futu_gateway.py
Update futu_gateway.py

andrewchenshx/vnpy,andrewchenshx/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,bigdig/vnpy,bigdig/vnpy,andrewchenshx/vnpy,msincenselee/vnpy,msincenselee/vnpy,vnpy/vnpy,andrewchenshx/vnpy,msincenselee/vnpy,bigdig/vnpy,bigdig/vnpy,vnpy/vnpy