TJX Cos., the Framingham parent of TJ Maxx and Marshalls, reported third-quarter revenue that topped expectations and raised its full-year earnings forecast. But the discount retailer’s fourth-quarter outlook, which includes the critical holiday period, and the full year were still below Wall Street’s view. TJX reported net income of $461.6 million, or 62 cents per share. That was up 14 percent from year-ago results. Revenue at stores open at least a year rose 7 percent in the quarter.