Touch up news fragments for 22.0

news/10291.feature.rst

-Changed ``PackageFinder`` to parse HTML documents using the stdlib
-:class:`html.parser.HTMLParser` class instead of the ``html5lib`` package. For
-now, the deprecated ``html5lib`` code remains and can be used with the
-``--use-deprecated=html5lib`` command line option, but it will be removed in a
-future pip release.
+Changed ``PackageFinder`` to parse HTML documents using the stdlib :class:`html.parser.HTMLParser` class instead of the ``html5lib`` package.
+
+For now, the deprecated ``html5lib`` code remains and can be used with the ``--use-deprecated=html5lib`` command line option. However, it will be removed in a future pip release.

news/10613.bugfix.rst

-When a package is requested by the user for upgrade, correctly identify that
-the extra-ed variant of that same package depended by another user-requested
-package is requesting the same package, and upgrade it accordingly.
+When a package is requested by the user for upgrade, correctly identify that the extra-ed variant of that same package depended by another user-requested package is requesting the same package, and upgrade it accordingly.

news/10617.bugfix.rst

-Prevent pip from installing yanked releases unless
-explicitly pinned via the ``==`` or ``===`` operators.
+Prevent pip from installing yanked releases unless explicitly pinned via the ``==`` or ``===`` operators.

news/10647.feature.rst

-Allow Python distributors to opt-out from or opt-in to the ``sysconfig``
-installation scheme backend by setting ``sysconfig._PIP_USE_SYSCONFIG``
-to ``True`` or ``False``.
+Allow Python distributors to opt-out from or opt-in to the ``sysconfig`` installation scheme backend by setting ``sysconfig._PIP_USE_SYSCONFIG`` to ``True`` or ``False``.

news/10655.bugfix.rst

-Stop backtracking on build failures, by instead surfacing them to the
-user and failing immediately. This behaviour is more forgiving when
-a package cannot be built due to missing build dependencies or platform
-incompatibility.
+Stop backtracking on build failures, by instead surfacing them to the user and aborting immediately. This behaviour provides more immediate feedback when a package cannot be built due to missing build dependencies or platform incompatibility.

news/10668.bugfix.rst

+Silence ``Value for <location> does not match`` warning caused by an erroneous patch in Slackware-distributed Python 3.9.

news/10668.process.rst

-Silence a *Value for <location> does not match* warning caused by an errornous
-patch in Slackware-distributed Python 3.9.

news/10686.feature.rst

-Make it possible to deselect tests requiring cryptography package on systems
-where it cannot be installed.
+Make it possible to deselect tests requiring cryptography package on systems where it cannot be installed.

news/10693.process.rst

-Replace all our tox operations with Nox.
+Completely replace :pypi:`tox` in our development workflow, with :pypi:`nox`.

news/10840.removal.rst

-Disable location mismatch warnings on Python versions prior to 3.10 since we
-have completed the transition and no longer need to rely on reports from older
-Python versions.
+Disable location mismatch warnings on Python versions prior to 3.10.
+
+These warnings were helping identify potential issues as part of the sysconfig -> distutils transition, and we no longer need to rely on reports from older Python versions for information on the transition.