input: Write a python function to fetch user data from a given URL and return it as a JSON object.
  assert fetch_user_data('https://jsonplaceholder.typicode.com/users') != []
  assert isinstance(fetch_user_data('https://jsonplaceholder.typicode.com/users'), list)
  assert isinstance(fetch_user_data('https://jsonplaceholder.typicode.com/users')[0], dict)
output: import requests
  
  def fetch_user_data(url):
      response = requests.get(url)
      return response.json()