Kim Hyo-joo, South Korea’s budding golf star, on Tuesday signed a lucrative five-year contract extension with her main corporate sponsor, Lotte Group. The conglomerate will pay her 1.3 billion won ($1.2 million) per year along with performance-based incentives.The 19-year-old said she is aware of the pressure and weight of expectations that come with such a momentous windfall. And to make sure she can live up to the big contract, Kim said she will place emphasis on her short game during her offs