input: Write a function to edit the given Python program to make a correct API request and parse the response. The function should add necessary headers with an API token and print each user from the response data.
  assert make_api_request("")==None
  assert make_api_request("Bearer YOUR_API_TOKEN")==None
output: def make_api_request(api_token):
      import requests
      url = "https://api.example.com/users"
      headers = {
          "Authorization": api_token,
          "Content-Type": "application/json"
      }
      response = requests.get(url, headers=headers)
      if response.status_code == 200:
          users = response.json()
          for user in users:
              print(user)
      return None