Generate a procedure in the form of a Python script to automate the process of downloading a list of websites.
website_list: ["www.example.com", "www.google.com", "www.facebook.com"]
import requests

for website in website_list:
    response = requests.get(website)
    with open(website.split('.')[0]+'.html', 'wb') as file:
        file.write(response.content)