fix kick message

pumpkin/src/client/player_packet.rs

@@ -402,7 +402,7 @@ impl Client {
     pub fn handle_set_creative_slot(&mut self, _server: &mut Server, packet: SSetCreativeSlot) {
         let gamemode = self.player.as_ref().unwrap().gamemode;
         if gamemode != GameMode::Creative {
-            self.kick("CHEATER")
+            self.kick("Invalid action, you can only do that if you are in creative")
         }
         let inventory = &mut self.player.as_mut().unwrap().inventory;