Contribute correction: Introducing the Square

  _  __   _    _     _____      ___    
 | |/ // | || | ||  / ____||   / _ \\  
 | ' //  | || | || / //---`'  | / \ || 
 | . \\  | \\_/ || \ \\___    | \_/ || 
 |_|\_\\  \____//   \_____||   \___//  
 `-` --`   `---`     `----`    `---`