Expand about soft keywords in the docs for keyword.py (GH-29139)

Add link at the top and fix the existing links to point to the "[soft keywords](https://docs.python.org/3.10/reference/lexical_analysis.html#soft-keywords)" section created in the Python 3.10 docs.

Changes should be backported to 3.10 as well.
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William Andrea 2021-10-23 12:24:02 -04:00 committed by GitHub
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@ -9,7 +9,7 @@
--------------
This module allows a Python program to determine if a string is a
:ref:`keyword <keywords>`.
:ref:`keyword <keywords>` or :ref:`soft keyword <soft-keywords>`.
.. function:: iskeyword(s)
@ -26,14 +26,14 @@ This module allows a Python program to determine if a string is a
.. function:: issoftkeyword(s)
Return ``True`` if *s* is a Python soft :ref:`keyword <keywords>`.
Return ``True`` if *s* is a Python :ref:`soft keyword <soft-keywords>`.
.. versionadded:: 3.9
.. data:: softkwlist
Sequence containing all the soft :ref:`keywords <keywords>` defined for the
Sequence containing all the :ref:`soft keywords <soft-keywords>` defined for the
interpreter. If any soft keywords are defined to only be active when particular
:mod:`__future__` statements are in effect, these will be included as well.