The U.K. advertising regulator has banned online promotions from Adidas, Calvin Klein, and Uniqlo after concluding that their use of the word "recycled" could mislead shoppers. The decisions affect several of the biggest names in clothing and may signal a broader push against loosely defined sustainability claims, according to City A.M. What happened? After examining Google ads run by Adidas U.K., Calvin Klein Europe, and Uniqlo's U.K. arm, the …