I have a small ding in a picture window in my house. It didn't break the seal in the double pane. Can this be repaired like automobile windshields?

Most references refer to the fact that auto glass is tempered while house glass is not, implying that windshield type repairs would not work on house glass.
Maybe this link will provide some ideas to consider.
Tips for removing scratches from glass top dining tables - by Sandra Petersen - Helium