Pokemon Diamond/Pearl Easter Egg - Hidden Pikachu(or Pichu) Face in credits

firstly defeat all elite four people and champion, then when your character is riding on the bike,in the daytime background look at the sky,one of the clouds has two dots on it then when the next scene comes along its the same but the cloud has changed shape and is now a pikachu or pichu face!!!!!!!!!! plz comment if its a pikachu or a pichu face