Fix typo in _PyObject_FastCallDict documentation (GH-12383)

diff --git a/Include/cpython/abstract.h b/Include/cpython/abstract.h
index 991bea14..b8b2d44 100644
--- a/Include/cpython/abstract.h
+++ b/Include/cpython/abstract.h
@@ -66,7 +66,7 @@
    If nargs is equal to zero, args can be NULL. kwargs can be NULL.
    nargs must be greater or equal to zero.
 
-   Return the result on success. Raise an exception on return NULL on
+   Return the result on success. Raise an exception and return NULL on
    error. */
 PyAPI_FUNC(PyObject *) _PyObject_FastCallDict(
     PyObject *callable,