input: Write a python function to fetch and print the temperature and wind speed of a given city using the OpenWeatherMap API.
  assert fetch_weather_data('Your_API_KEY', 'Dataak') == 'Temperature : XX degree celcius\nWind Speed : YY m/s'
  assert fetch_weather_data('Your_API_KEY', 'London') == 'Temperature : XX degree celcius\nWind Speed : YY m/s'
  assert fetch_weather_data('Your_API_KEY', 'New York') == 'Temperature : XX degree celcius\nWind Speed : YY m/s'
output: import requests
  
  def fetch_weather_data(api_key, city):
      url = f"http://api.openweathermap.org/data/2.5/weather?q={city}&appid={api_key}&units=metric"
      response = requests.get(url)
      if response.status_code == 200:
          data = response.json()
          temperature = data['main']['temp']
          wind_speed = data['wind']['speed']
          return f'Temperature : {temperature} degree celcius\nWind Speed : {wind_speed} m/s'
      else:
          return "Error: Unable to fetch data"