Google Logo Spelled Wrong?

This morning, when i opened the Google homepage, i saw the Google logo is spelled wrong, it became "Googlle". Well, it doesn't surprise me, coz i know it must be something special today for Google. When i moved my mouse cursor to the logo, i saw "Google's 11th Birthday", haha..i knew it.

Google is celebrating its 11th anniversary today and decided to commemorate the event with a doodle that references the number 11 by adding another "l", to create "Googlle." (See photo below)