Merge pull request #726 from jitsi/rename_kicked_event

fix(JitsiConferenceEvents): typo in KICKED

JitsiConferenceEvents.js

 /**
  * You are kicked from the conference.
  */
-export const KICKED = 'conferenece.kicked';
+export const KICKED = 'conference.kicked';
 
 /**
  * The Last N set is changed.