Fix Challenge Broadcast

src/de/steamwar/bungeecore/commands/ChallengeCommand.java

@@ -80,7 +80,7 @@ public class ChallengeCommand extends BasicCommand {
                 arena.sendPlayer(player);
                 arena.sendPlayer(target);
 
-                Message.broadcast("CHALLENGE_BROADCAST", sender, true, "CHALLENGE_BROADCAST_HOVER",
+                Message.broadcast("CHALLENGE_BROADCAST", "CHALLENGE_BROADCAST_HOVER",
                         new ClickEvent(ClickEvent.Action.RUN_COMMAND, "/join " + player.getName()), mode.getDisplayName(), player.getDisplayName(), target.getDisplayName());
             }else{
                 if(!challenges.containsKey(player)){