Use Finex API

When using Finex some routes should be changed to use finex instead of peatio.

Description Peatio URL Finex URL
Create order /api/v2/peatio/market/orders /api/v2/finex/market/orders
Cancel order /api/v2/peatio/market/orders/cancel/{order.id} /api/v2/finex/market/orders/cancel/{order.id}
Cancel all orders /api/v2/peatio/market/orders/cancel /api/v2/finex/market/orders/cancel