Update dice.py

[rohitgaikwad17]

Switched from Python’s built-in random to NumPy’s random.randint()

Fixed typo in title (Dics Simulator → Dice Simulator)

Replaced multiple if-elif blocks with a dictionary for cleaner, more maintainable dice face printing

Updated loop exit logic to use break instead of exit(0)

[rohitgaikwad17]

Please merged my changes and add my name in contributers in project because this my college activity