[3.12] docs: Fix "Py_TPFLAGS_MANAGED_WEAKREF is set in tp_flags" (GH-112237) (#121310)

docs: Fix "Py_TPFLAGS_MANAGED_WEAKREF is set in tp_flags" (GH-112237)
(cherry picked from commit 4232976)

Co-authored-by: da-woods <[email protected]>

Author: miss-islington

Doc/c-api/typeobj.rst

@@ -1584,7 +1584,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
    weak references to the type object itself.
 
    It is an error to set both the :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` bit and
-   :c:member:`~PyTypeObject.tp_weaklist`.
+   :c:member:`~PyTypeObject.tp_weaklistoffset`.
 
    **Inheritance:**
 
@@ -1596,7 +1596,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
    **Default:**
 
    If the :c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` bit is set in the
-   :c:member:`~PyTypeObject.tp_dict` field, then
+   :c:member:`~PyTypeObject.tp_flags` field, then
    :c:member:`~PyTypeObject.tp_weaklistoffset` will be set to a negative value,
    to indicate that it is unsafe to use this field.