Issue #16484: PYTHONDOCS still uses “http:” in Python 2

Doc/library/pydoc.rst

@@ -80,7 +80,7 @@ documents precisely the version of the module you would get if you started the
 Python interpreter and typed ``import spam``.
 
 Module docs for core modules are assumed to reside in
-https://docs.python.org/library/.  This can be overridden by setting the
+http://docs.python.org/library/.  This can be overridden by setting the
 :envvar:`PYTHONDOCS` environment variable to a different URL or to a local
 directory containing the Library Reference Manual pages.