A man was stabbed in the parking garage at Newport Centre mall in Downtown Jersey City Tuesday night after apparently confronting a group of kids throwing rocks and other items at his vehicle. The 56-year-old victim suffered two puncture wounds, one to his lower left abdomen and another to the upper left side of the stomach in the incident at 6:40 p.m., Jersey City spokeswoman Kimberly Wallace-Scalcione said. Responding police officers administered aid until EMTs arrived and transported the victim to a local hospital. The injuries were not considered life-threatening. Wallace-Scalcione said fi…