Updated wdio.conf.js example
Updated wdio.conf.js example

Updated spelling and grammar to make comments more readable in the example config file.
Pitzcarraldo/webdriverio,sebastiendavid/webdriverio,testingbot/webdriverjs,monolithed/webdriverio,Pitzcarraldo/webdriverio,testingbot/webdriverjs,sebastiendavid/webdriverio,monolithed/webdriverio