input: Write a python function to get the HTML content of a given URL and decode it to UTF-8.
  assert get_html_content("https://example.org/") is not None
  assert "Example Domain" in get_html_content("https://example.org/")
  assert isinstance(get_html_content("https://example.org/"), str)
output: def get_html_content(url):
      import requests
      response = requests.get(url)
      response.encoding = 'utf-8'
      return response.text