[DOC] Use "currency" instead of "code".
[DOC] Use "currency" instead of "code".

xdv/gatewayd,zealord/gatewayd,crazyquark/gatewayd,Parkjeahwan/awegeeks,zealord/gatewayd,crazyquark/gatewayd,xdv/gatewayd,Parkjeahwan/awegeeks,whotooktwarden/gatewayd,whotooktwarden/gatewayd