bpo-34085: Improve wording on classmethod/staticmethod (GH-8228)

* bpo-34085: Improve wording on classmethod/staticmethod

* Address comments from Éric

* Address comments from Éric
(cherry picked from commit 548cb60)

Co-authored-by: Andre Delfino <adelfino@gmail.com>

Doc/library/functions.rst

@@ -175,19 +175,18 @@ section.
           def f(cls, arg1, arg2, ...):
               ...
 
-   The ``@classmethod`` form is a function :term:`decorator` -- see the description
-   of function definitions in :ref:`function` for details.
+   The ``@classmethod`` form is a function :term:`decorator` -- see
+   :ref:`function` for details.
 
-   It can be called either on the class (such as ``C.f()``) or on an instance (such
+   A class method can be called either on the class (such as ``C.f()``) or on an instance (such
    as ``C().f()``).  The instance is ignored except for its class. If a class
    method is called for a derived class, the derived class object is passed as the
    implied first argument.
 
    Class methods are different than C++ or Java static methods. If you want those,
-   see :func:`staticmethod` in this section.
+   see :func:`staticmethod`.
 
-   For more information on class methods, consult the documentation on the standard
-   type hierarchy in :ref:`types`.
+   For more information on class methods, see :ref:`types`.
 
    .. versionadded:: 2.2
 
@@ -1346,18 +1345,17 @@ section.
           def f(arg1, arg2, ...):
               ...
 
-   The ``@staticmethod`` form is a function :term:`decorator` -- see the
-   description of function definitions in :ref:`function` for details.
+   The ``@staticmethod`` form is a function :term:`decorator` -- see
+   :ref:`function` for details.
 
-   It can be called either on the class (such as ``C.f()``) or on an instance (such
-   as ``C().f()``).  The instance is ignored except for its class.
+   A static method can be called either on the class (such as ``C.f()``) or on an instance (such
+   as ``C().f()``).
 
    Static methods in Python are similar to those found in Java or C++. Also see
    :func:`classmethod` for a variant that is useful for creating alternate
    class constructors.
 
-   For more information on static methods, consult the documentation on the
-   standard type hierarchy in :ref:`types`.
+   For more information on static methods, see :ref:`types`.
 
    .. versionadded:: 2.2