gh-101100: Fix some broken sphinx references (#107095)

Doc/c-api/iterator.rst

@@ -6,7 +6,7 @@ Iterator Objects
 ----------------
 
 Python provides two general-purpose iterator objects.  The first, a sequence
-iterator, works with an arbitrary sequence supporting the :meth:`__getitem__`
+iterator, works with an arbitrary sequence supporting the :meth:`~object.__getitem__`
 method.  The second works with a callable object and a sentinel value, calling
 the callable for each item in the sequence, and ending the iteration when the
 sentinel value is returned.

Doc/c-api/mapping.rst

@@ -13,7 +13,7 @@ See also :c:func:`PyObject_GetItem`, :c:func:`PyObject_SetItem` and
 
    Return ``1`` if the object provides the mapping protocol or supports slicing,
    and ``0`` otherwise.  Note that it returns ``1`` for Python classes with
-   a :meth:`__getitem__` method, since in general it is impossible to
+   a :meth:`~object.__getitem__` method, since in general it is impossible to
    determine what type of keys the class supports. This function always succeeds.
 
 
@@ -90,7 +90,7 @@ See also :c:func:`PyObject_GetItem`, :c:func:`PyObject_SetItem` and
    This is equivalent to the Python expression ``key in o``.
    This function always succeeds.
 
-   Note that exceptions which occur while calling the :meth:`__getitem__`
+   Note that exceptions which occur while calling the :meth:`~object.__getitem__`
    method will get suppressed.
    To get error reporting use :c:func:`PyObject_GetItem()` instead.
 
@@ -101,7 +101,7 @@ See also :c:func:`PyObject_GetItem`, :c:func:`PyObject_SetItem` and
    This is equivalent to the Python expression ``key in o``.
    This function always succeeds.
 
-   Note that exceptions which occur while calling the :meth:`__getitem__`
+   Note that exceptions which occur while calling the :meth:`~object.__getitem__`
    method and creating a temporary string object will get suppressed.
    To get error reporting use :c:func:`PyMapping_GetItemString()` instead.
 

Doc/c-api/refcounting.rst

@@ -101,7 +101,7 @@ of Python objects.
    .. warning::
 
       The deallocation function can cause arbitrary Python code to be invoked (e.g.
-      when a class instance with a :meth:`__del__` method is deallocated).  While
+      when a class instance with a :meth:`~object.__del__` method is deallocated).  While
       exceptions in such code are not propagated, the executed code has free access to
       all Python global variables.  This means that any object that is reachable from
       a global variable should be in a consistent state before :c:func:`Py_DECREF` is

Doc/c-api/sequence.rst

@@ -9,7 +9,7 @@ Sequence Protocol
 .. c:function:: int PySequence_Check(PyObject *o)
 
    Return ``1`` if the object provides the sequence protocol, and ``0`` otherwise.
-   Note that it returns ``1`` for Python classes with a :meth:`__getitem__`
+   Note that it returns ``1`` for Python classes with a :meth:`~object.__getitem__`
    method, unless they are :class:`dict` subclasses, since in general it
    is impossible to determine what type of keys the class supports.  This
    function always succeeds.