SAN FRANCISCO (Reuters) – Getting married was a smart business move as well as a personal milestone for Facebook chief Mark Zuckerberg, with the timing of the wedding, the day after the company’s initial public offering, potentially proving particularly advantageous, California divorce lawyers said on Sunday. Assuming the couple signed a prenuptial agreement, as most wealthy Californians do, Zuckerberg and Chan would have agreed exactly how to split assets, including his Facebook stock, if their marriage dissolved in future. …