gh-101100: Fix Sphinx warnings in `turtle` module (GH-102340)

(cherry picked from commit 78e4e6c3d7)

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>
Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>

Doc/library/turtle.rst

@@ -1214,7 +1214,7 @@ Appearance
    will be displayed stretched according to its stretchfactors: *stretch_wid* is
    stretchfactor perpendicular to its orientation, *stretch_len* is
    stretchfactor in direction of its orientation, *outline* determines the width
-   of the shapes's outline.
+   of the shape's outline.
 
    .. doctest::
       :skipif: _tkinter is None
@@ -1545,7 +1545,7 @@ below:
 
 1. Create an empty Shape object of type "compound".
 2. Add as many components to this object as desired, using the
-   :meth:`addcomponent` method.
+   :meth:`~Shape.addcomponent` method.
 
    For example:
 
@@ -2125,7 +2125,7 @@ Public classes
 
    :param cv: a :class:`tkinter.Canvas`
 
-   Provides screen oriented methods like :func:`setbg` etc. that are described
+   Provides screen oriented methods like :func:`bgcolor` etc. that are described
    above.
 
 .. class:: Screen()
@@ -2315,7 +2315,9 @@ of this module or which better fits to your needs, e.g. for use in a classroom,
 you can prepare a configuration file ``turtle.cfg`` which will be read at import
 time and modify the configuration according to its settings.
 
-The built in configuration would correspond to the following turtle.cfg::
+The built in configuration would correspond to the following ``turtle.cfg``:
+
+.. code-block:: ini
 
    width = 0.5
    height = 0.75
@@ -2340,15 +2342,15 @@ The built in configuration would correspond to the following turtle.cfg::
 
 Short explanation of selected entries:
 
-- The first four lines correspond to the arguments of the :meth:`Screen.setup`
+- The first four lines correspond to the arguments of the :func:`Screen.setup <setup>`
   method.
 - Line 5 and 6 correspond to the arguments of the method
-  :meth:`Screen.screensize`.
+  :func:`Screen.screensize <screensize>`.
 - *shape* can be any of the built-in shapes, e.g: arrow, turtle, etc.  For more
   info try ``help(shape)``.
-- If you want to use no fillcolor (i.e. make the turtle transparent), you have
+- If you want to use no fill color (i.e. make the turtle transparent), you have
   to write ``fillcolor = ""`` (but all nonempty strings must not have quotes in
-  the cfg-file).
+  the cfg file).
 - If you want to reflect the turtle its state, you have to use ``resizemode =
   auto``.
 - If you set e.g. ``language = italian`` the docstringdict
@@ -2398,6 +2400,8 @@ The :mod:`turtledemo` package directory contains:
 
 The demo scripts are:
 
+.. currentmodule:: turtle
+
 .. tabularcolumns:: |l|L|L|
 
 +----------------+------------------------------+-----------------------+
@@ -2469,20 +2473,20 @@ Have fun!
 Changes since Python 2.6
 ========================
 
-- The methods :meth:`Turtle.tracer`, :meth:`Turtle.window_width` and
-  :meth:`Turtle.window_height` have been eliminated.
+- The methods :func:`Turtle.tracer <tracer>`, :func:`Turtle.window_width <window_width>` and
+  :func:`Turtle.window_height <window_height>` have been eliminated.
   Methods with these names and functionality are now available only
   as methods of :class:`Screen`. The functions derived from these remain
   available. (In fact already in Python 2.6 these methods were merely
   duplications of the corresponding
-  :class:`TurtleScreen`/:class:`Screen`-methods.)
+  :class:`TurtleScreen`/:class:`Screen` methods.)
 
-- The method :meth:`Turtle.fill` has been eliminated.
-  The behaviour of :meth:`begin_fill` and :meth:`end_fill`
-  have changed slightly: now  every filling-process must be completed with an
+- The method :func:`!Turtle.fill` has been eliminated.
+  The behaviour of :func:`begin_fill` and :func:`end_fill`
+  have changed slightly: now every filling process must be completed with an
   ``end_fill()`` call.
 
-- A method :meth:`Turtle.filling` has been added. It returns a boolean
+- A method :func:`Turtle.filling <filling>` has been added. It returns a boolean
   value: ``True`` if a filling process is under way, ``False`` otherwise.
   This behaviour corresponds to a ``fill()`` call without arguments in
   Python 2.6.
@@ -2490,23 +2494,23 @@ Changes since Python 2.6
 Changes since Python 3.0
 ========================
 
-- The methods :meth:`Turtle.shearfactor`, :meth:`Turtle.shapetransform` and
-  :meth:`Turtle.get_shapepoly` have been added. Thus the full range of
+- The :class:`Turtle` methods :func:`shearfactor`, :func:`shapetransform` and
+  :func:`get_shapepoly` have been added. Thus the full range of
   regular linear transforms is now available for transforming turtle shapes.
-  :meth:`Turtle.tiltangle` has been enhanced in functionality: it now can
-  be used to get or set the tiltangle. :meth:`Turtle.settiltangle` has been
+  :func:`tiltangle` has been enhanced in functionality: it now can
+  be used to get or set the tilt angle. :func:`settiltangle` has been
   deprecated.
 
-- The method :meth:`Screen.onkeypress` has been added as a complement to
-  :meth:`Screen.onkey` which in fact binds actions to the keyrelease event.
-  Accordingly the latter has got an alias: :meth:`Screen.onkeyrelease`.
+- The :class:`Screen` method :func:`onkeypress` has been added as a complement to
+  :func:`onkey`. As the latter binds actions to the key release event,
+  an alias: :func:`onkeyrelease` was also added for it.
 
-- The method  :meth:`Screen.mainloop` has been added. So when working only
-  with Screen and Turtle objects one must not additionally import
-  :func:`mainloop` anymore.
+- The method :func:`Screen.mainloop <mainloop>` has been added,
+  so there is no longer a need to use the standalone :func:`mainloop` function
+  when working with :class:`Screen` and :class:`Turtle` objects.
 
-- Two input methods has been added :meth:`Screen.textinput` and
-  :meth:`Screen.numinput`. These popup input dialogs and return
+- Two input methods have been added: :func:`Screen.textinput <textinput>` and
+  :func:`Screen.numinput <numinput>`. These pop up input dialogs and return
   strings and numbers respectively.
 
 - Two example scripts :file:`tdemo_nim.py` and :file:`tdemo_round_dance.py`

Lib/turtle.py

@@ -953,7 +953,7 @@ def __repr__(self):
 
 
 class TurtleScreen(TurtleScreenBase):
-    """Provides screen oriented methods like setbg etc.
+    """Provides screen oriented methods like bgcolor etc.
 
     Only relies upon the methods of TurtleScreenBase and NOT
     upon components of the underlying graphics toolkit -