Fix PyVectorcall_Function doc versionadded (#107140)

The documentation implies that PyVectorcall_Function() was available in Python 3.8.
This is half-true - it was available under a different name. I think it's clearer to set
the "version added" to 3.9.

diff --git a/Doc/c-api/call.rst b/Doc/c-api/call.rst
index 8be4b5ab80c2deb7b6ff0afbdb1fca0ffc870aaa..aed4ae44c76eead574d6f4b4a7da4f13d03bf367 100644 (file)
--- a/Doc/c-api/call.rst
+++ b/Doc/c-api/call.rst
@@ -152,7 +152,7 @@ Vectorcall Support API
    This is mostly useful to check whether or not *op* supports vectorcall,
    which can be done by checking ``PyVectorcall_Function(op) != NULL``.
 
-   .. versionadded:: 3.8
+   .. versionadded:: 3.9
 
 .. c:function:: PyObject* PyVectorcall_Call(PyObject *callable, PyObject *tuple, PyObject *dict)