Fixed a typo in the Relay.join docstring.
Fixed a typo in the Relay.join docstring.

Ban3/Limnoria,ProgVal/Limnoria-test,raboof/supybot,mazaclub/mazabot-core,kblin/supybot-gsoc,buildbot/supybot,Ban3/Limnoria,prashantpawar/supybot-rothbot,jeffmahoney/supybot,ProgVal/Limnoria-test,frumiousbandersnatch/supybot-code,mazaclub/mazabot-core,haxwithaxe/supybot