[DOC] Add example json for users endpoint.
[DOC] Add example json for users endpoint.

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