input: def positive_feedback_loop(iterations: int) -> None:
      """This function takes an integer representing the number of iterations and prints
      "hello" for the specified number of iterations. Once the loop successfully completes,
      it prints a positive feedback message "You've got it!".
      
      >>> positive_feedback_loop(10)
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      You've got it!
      """
output:     for _ in range(iterations):
          print("hello")
      print("You've got it!")