Fixed cannot use display error

[nguyengiabach1201]

Fixed these errors:

command-line-arguments

gopher.go:80:20: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:81:20: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:82:20: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:83:20: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:86:21: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.WriteLine: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:89:20: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:90:20: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:103:21: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:114:21: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:121:21: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:127:21: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:133:21: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:140:21: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:145:21: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinyfont.DrawChar: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)
gopher.go:151:3: cannot use display (variable of type machine.DisplayMode3) as drivers.Displayer value in argument to tinydraw.FilledRectangle: machine.DisplayMode3 does not implement drivers.Displayer (method Display has pointer receiver)

By changed display to &display