[FOSDEM Treasure] Wrong T-Shirt size for Sales Order S00281

Greetings, I had to order a T-shirt of size M but somehow ended up ordering it of XS size. Can this be changed for sales order S00281 from Contributor T-Shirt (XS, Non Fitted [Male]) 1.000 Units to Contributor T-Shirt (M, Non Fitted [Male]) 1.000 Units -- Thanks and Regards Abhishesh