[3.12] gh-129912: Fix references to Py_TPFLAGS_MANAGED_DICT (gh-130044) (gh-130060)

(cherry picked from commit 791cdfe)

Co-authored-by: Satyam Kumar <[email protected]>

Author: miss-islington

Doc/c-api/typeobj.rst

@@ -1821,7 +1821,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
    dictionary, so it is may be more efficient to call :c:func:`PyObject_GetAttr`
    when accessing an attribute on the object.
 
-   It is an error to set both the :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` bit and
+   It is an error to set both the :c:macro:`Py_TPFLAGS_MANAGED_DICT` bit and
    :c:member:`~PyTypeObject.tp_dictoffset`.
 
    **Inheritance:**