input: from typing import List
  
  def positive_feedback_loop(iterations: int) -> None:
      """ Change the given python program to a positive feedback loop by adding a counter and a congratulatory message.
      The loop should execute a given number of times, printing "hello" for each iteration, and when the counter reaches
      the specified number of iterations, it should print a message: "You've got it!".
      >>> positive_feedback_loop(10)
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      hello
      You've got it!
      """
      for i in range(iterations):
          print("hello")
          if i == iterations - 1:
              print("You've got it!")
output:     for i in range(iterations):
          print("hello")
          if i == iterations - 1:
              print("You've got it!")