“Check back with me in about one year,” Topher Grace told Kelly Clarkson after she congratulated him on his pregnancy news with wife Ashley Hinshaw   Topher Grace and wife Ashley Hinshaw are about to be a family of five. The That ’70s Show alum, 44, confirmed that they’re expecting their third child as he appeared Friday on The Kelly Clarkson Show. “We’re excited. My wife, I’ll just take this …