bpo-38158: Removing nonexistant member "doc" from PyType_Spec documentation (GH-16142) (GH-16154)

(cherry picked from commit 8b31a11a698cb5aa9b439b349c8de4e388846f73)

Co-authored-by: t k <tahia.khan@utoronto.ca>
diff --git a/Doc/c-api/type.rst b/Doc/c-api/type.rst
index 8f8367a..6416951 100644
--- a/Doc/c-api/type.rst
+++ b/Doc/c-api/type.rst
@@ -142,10 +142,6 @@
 
       Name of the type, used to set :c:member:`PyTypeObject.tp_name`.
 
-   .. c:member:: const char* PyType_Spec.doc
-
-      Type docstring, used to set :c:member:`PyTypeObject.tp_doc`.
-
    .. c:member:: int PyType_Spec.basicsize
    .. c:member:: int PyType_Spec.itemsize