docs(browser-support): Fixed incorrect example
docs(browser-support): Fixed incorrect example

Fixed incorrect example of setting window size with headless Chrome. When `800x600` is used it is ignored. The correct syntax is `800,600`.
onshape/protractor,onshape/protractor,angular/protractor,mgiambalvo/protractor,onshape/protractor,angular/protractor,mgiambalvo/protractor,cnishina/protractor,cnishina/protractor,angular/protractor,mgiambalvo/protractor,angular/protractor,cnishina/protractor,onshape/protractor,cnishina/protractor,mgiambalvo/protractor