Make the sample match the rest of the argument documentation (#839)
Make the sample match the rest of the argument documentation (#839)

I was confused that it was called ```baudRate``` in ```Port configurtation options``` but shown as ```baudrate``` in the example. Yay for more consistency.
rhuehn/node-serialport,ms-iot/node-serialport,EmergingTechnologyAdvisors/node-serialport,ms-iot/node-serialport,ms-iot/node-serialport,EmergingTechnologyAdvisors/node-serialport,node-serialport/node-serialport,giseburt/node-serialport,rhuehn/node-serialport,munyirik/node-serialport,node-serialport/node-serialport,voodootikigod/node-serialport,node-serialport/node-serialport,rhuehn/node-serialport,munyirik/node-serialport,EmergingTechnologyAdvisors/node-serialport,voodootikigod/node-serialport,voodootikigod/node-serialport,ms-iot/node-serialport,EmergingTechnologyAdvisors/node-serialport,ms-iot/node-serialport,giseburt/node-serialport,munyirik/node-serialport,node-serialport/node-serialport,munyirik/node-serialport,giseburt/node-serialport,EmergingTechnologyAdvisors/node-serialport,voodootikigod/node-serialport,node-serialport/node-serialport,rhuehn/node-serialport,giseburt/node-serialport