Fix typos in comment and documentation
diff --git a/Objects/abstract.c b/Objects/abstract.c
index f9afece..d838856 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -2325,7 +2325,7 @@
     return result;
 }
 
-/* Positional arguments are obj followed args. */
+/* Positional arguments are obj followed by args. */
 PyObject *
 _PyObject_Call_Prepend(PyObject *func,
                        PyObject *obj, PyObject *args, PyObject *kwargs)