Changed all occurences of 'relaies' to 'relays'.

According to the dictionaries to which I have most ready access, there's
no word spelled 'relaies':
 - http://www.merriam-webster.com/dictionary/relaies
 - http://dictionary.reference.com/browse/relaies

The word I typically tend to use for something a bit more involved than
simple delegation, is 'relay', which becomes 'relays':
 - http://dictionary.reference.com/browse/relays