Fix PyObject_Call() parameter names

Issue #27128: arg=>args, kw=>kwargs.

Same change for PyEval_CallObjectWithKeywords().
diff --git a/Include/ceval.h b/Include/ceval.h
index d194044..73b4ca6 100644
--- a/Include/ceval.h
+++ b/Include/ceval.h
@@ -8,7 +8,7 @@
 /* Interface to random parts in ceval.c */
 
 PyAPI_FUNC(PyObject *) PyEval_CallObjectWithKeywords(
-    PyObject *, PyObject *, PyObject *);
+    PyObject *func, PyObject *args, PyObject *kwargs);
 
 /* Inline this */
 #define PyEval_CallObject(func,arg) \