Service Template Should Return Status rather than Code

[stnguyen90]

https://github.com/fmvilas/swagger-node-codegen/blob/603511c202f41224832fbef89a4f11199faddfd7/templates/express-server/src/api/services/___.js#L33

code should be status as the comments and routes expect the status property.

[fmvilas]

Thanks for the fix @stnguyen90. I'm closing the issue. Feel free to keep commenting here.