NEW YORK — Acknowledging he “didn’t get it right” with a two-game suspension for Ravens running back Ray Rice, NFL Commissioner Roger Goodell announced tougher penalties for players accused of domestic violence, including six weeks for a first offense and at least a year for a second.In a letter sent to all 32 team owners Thursday and obtained by The Associated Press, Goodell never mentions Rice by name but makes clear references to the Baltimore player who was charged with assault after being caught on video dragging his then-fiancee off a casino elevator.“My disciplinary decision led the public to question our sincerity, our commitment, and whether we understood the toll that domestic violence inflicts on so many families. I take responsibility both for the decision and for ensuring that our actions in the future properly reflect our values,” Goodell wrote. “I didn’t get it right.