input: Write a python function to simulate a two-player guessing game where each player guesses a number between 1 and 10, and the function prints the winner.
  assert guessing_game(5, 5, 5, 5) == "Player 1 wins!"
  assert guessing_game(5, 4, 5, 5) == "Player 2 wins!"
  assert guessing_game(3, 3, 5, 5) == "Player 1 wins!"
  assert guessing_game(7, 7, 8, 8) == "Player 2 wins!"
output: def guessing_game(guess1, guess2, actual1, actual2):
      diff1 = abs(guess1 - actual1)
      diff2 = abs(guess2 - actual2)
      
      if diff1 < diff2:
          return "Player 1 wins!"
      elif diff2 < diff1:
          return "Player 2 wins!"
      else:
          return "It's a tie!"