[docs] Fix typo for functools.cmp_to_key (GH-95766)

(cherry picked from commit f83b0ca)

Co-authored-by: Andrzej Bartosiński <6197476+Neob91@users.noreply.github.com>

Doc/library/functools.rst

@@ -119,7 +119,7 @@ The :mod:`functools` module defines the following functions:
    tool for programs being converted from Python 2 which supported the use of
    comparison functions.
 
-   A comparison function is any callable that accept two arguments, compares them,
+   A comparison function is any callable that accepts two arguments, compares them,
    and returns a negative number for less-than, zero for equality, or a positive
    number for greater-than.  A key function is a callable that accepts one
    argument and returns another value to be used as the sort key.