Merge doc changes from 3.2.

rstlint complains about packaging docs but I’m working on those in
another patch.
diff --git a/Doc/faq/design.rst b/Doc/faq/design.rst
index b9faf57..1f3135a 100644
--- a/Doc/faq/design.rst
+++ b/Doc/faq/design.rst
@@ -667,7 +667,7 @@
 Python 2.6 adds an :mod:`abc` module that lets you define Abstract Base Classes
 (ABCs).  You can then use :func:`isinstance` and :func:`issubclass` to check
 whether an instance or a class implements a particular ABC.  The
-:mod:`collections` modules defines a set of useful ABCs such as
+:mod:`collections.abc` module defines a set of useful ABCs such as
 :class:`Iterable`, :class:`Container`, and :class:`MutableMapping`.
 
 For Python, many of the advantages of interface specifications can be obtained