Update the docstring for apply() so that "args" is marked as optional
(since it is).
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 1ad534f..8f114f3 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -92,7 +92,7 @@
 }
 
 static char apply_doc[] =
-"apply(object, args[, kwargs]) -> value\n\
+"apply(object[, args[, kwargs]]) -> value\n\
 \n\
 Call a callable object with positional arguments taken from the tuple args,\n\
 and keyword arguments taken from the optional dictionary kwargs.\n\