unnecessary space character on language parameter

> com_g <- ggmap(get_googlemap(center = cent, zoom=12, maptype='roadmap', language='ko'),extent='device',
+               base_layer=ggplot(comm_gogamza, aes(x=longitude_correct, y=latitude_correct))) 
Map from URL : http://maps.googleapis.com/maps/api/staticmap?center=37.529606,126.961359&zoom=12&size=%20640x640&maptype=roadmap&language=%20ko&sensor=false
Google Maps API Terms of Service : http://developers.google.com/maps/terms



Language parameter doesn't work because of space character.

This patch makes language parameter work.