gh-101100: Fix Sphinx warnings in library/configparser.rst

[hugovk]

Fix 14 warnings in library/configparser.rst and 20 configparser-related warnings elsewhere:

build/NEWS:10797: WARNING: py:class reference target not found: configparser.Interpolation build/NEWS:13368: WARNING: py:attr reference target not found: filename build/NEWS:13368: WARNING: py:class reference target not found: ConfigParser build/NEWS:13368: WARNING: py:class reference target not found: ParsingError build/NEWS:13368: WARNING: py:class reference target not found: SafeConfigParser build/NEWS:13368: WARNING: py:meth reference target not found: readfp build/NEWS:26630: WARNING: py:obj reference target not found: ConfigParser.items() Doc/library/configparser.rst:211: WARNING: py:meth reference target not found: get Doc/library/configparser.rst:235: WARNING: py:meth reference target not found: get Doc/library/configparser.rst:483: WARNING: py:meth reference target not found: __init__ Doc/library/configparser.rst:493: WARNING: py:meth reference target not found: read_dict Doc/library/configparser.rst:637: WARNING: py:meth reference target not found: read_dict Doc/library/configparser.rst:637: WARNING: py:meth reference target not found: read_file Doc/library/configparser.rst:637: WARNING: py:meth reference target not found: read_string Doc/library/configparser.rst:694: WARNING: py:meth reference target not found: getdecimal Doc/library/configparser.rst:1064: WARNING: py:attr reference target not found: name Doc/library/configparser.rst:1069: WARNING: py:meth reference target not found: readfp Doc/library/configparser.rst:1217: WARNING: py:meth reference target not found: get Doc/library/configparser.rst:1290: WARNING: py:meth reference target not found: add_section Doc/library/configparser.rst:1295: WARNING: py:meth reference target not found: __init__ Doc/library/configparser.rst:1349: WARNING: py:meth reference target not found: __init__ Doc/library/logging.config.rst:94: WARNING: py:class reference target not found: configparser.Configparser Doc/whatsnew/2.0.rst:1031: WARNING: py:mod reference target not found: ConfigParser Doc/whatsnew/2.4.rst:1055: WARNING: py:meth reference target not found: read Doc/whatsnew/2.4.rst:1055: WARNING: py:mod reference target not found: ConfigParser Doc/whatsnew/2.7.rst:290: WARNING: py:mod reference target not found: ConfigParser Doc/whatsnew/2.7.rst:1137: WARNING: py:mod reference target not found: ConfigParser Doc/whatsnew/3.2.rst:184: WARNING: py:mod reference target not found: ConfigParser Doc/whatsnew/3.2.rst:2135: WARNING: py:class reference target not found: ConfigParser Doc/whatsnew/3.2.rst:2135: WARNING: py:class reference target not found: SafeConfigParser Doc/whatsnew/3.2.rst:2411: WARNING: py:class reference target not found: ConfigParser Doc/whatsnew/3.2.rst:2616: WARNING: py:class reference target not found: ConfigParser Doc/whatsnew/3.2.rst:2616: WARNING: py:class reference target not found: SafeConfigParser Doc/whatsnew/3.11.rst:1776: WARNING: py:meth reference target not found: configparser.RawConfigParser.readfp 

• Issue: Fix all Sphinx reference warnings in the documentation #101100

[AlexWaygood]

Looks great!

[miss-islington-app]

Thanks @hugovk for the PR 🌮🎉.. I'm working now to backport this PR to: 3.11, 3.12.
🐍🍒⛏🤖

[miss-islington-app]

Sorry, @hugovk, I could not cleanly backport this to 3.12 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 30a6d79fb8bc1ef96600c290c016720103b74b2d 3.12 

[miss-islington-app]

Sorry, @hugovk, I could not cleanly backport this to 3.11 due to a conflict.
Please backport using cherry_picker on command line.

cherry_picker 30a6d79fb8bc1ef96600c290c016720103b74b2d 3.11 

[bedevere-app]

GH-113599 is a backport of this pull request to the 3.12 branch.

[bedevere-app]

GH-113600 is a backport of this pull request to the 3.11 branch.