Jay-Z noticed a typo as he unveiled a giant page of his upcoming autobiography, “Decoded,” pasted on the bottom of the pool at his Bing launch event at the Delano in South Beach on Wednesday night. Onlookers watched as he read his lyrics from the page aloud, but one told us, “Jay then saw a mistake in the song ‘Big Pimpin’ and pointed it out to his team to get it fixed. ” Jay-Z posed for photos with wife Beyoncé,who avoided never-ending baby questions despite her mom insisting she’s not expecting. A scoundrel who tried stealing what he thought was a copy of Jay’s book from a pile on display got a surprise: underneath the jacket was “Bubby’s Brunch Cookbook: Recipes and Menus from New York’s Favorite Comfort Food Restaurant.” A rep said, “The lyrics will be fixed. The book hasn’t been printed yet and comes out in November.”