[3.9] gh-102627: Replace address pointing toward malicious web page (GH-102630) (GH-102666)

(cherry picked from commit 61479d4)

Co-authored-by: Blind4Basics <[email protected]>
Co-authored-by: C.A.M. Gerlach <[email protected]>
Co-authored-by: Hugo van Kemenade <[email protected]>

Author: 4 people

Doc/library/concurrent.futures.rst

@@ -194,7 +194,7 @@ ThreadPoolExecutor Example
            'http://www.cnn.com/',
            'http://europe.wsj.com/',
            'http://www.bbc.co.uk/',
-           'http://some-made-up-domain.com/']
+           'http://nonexistant-subdomain.python.org/']
 
    # Retrieve a single page and report the URL and contents
    def load_url(url, timeout):