[clutter/clutter-1.16] Fix up "allow-none" annotation

[Emmanuele Bassi <ebassi src gnome org>]

commit fd9109e6d6817e485c8cf6b75a8ab897edf7cdb4
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon May 6 10:20:36 2013 -0700

    Fix up "allow-none" annotation

 clutter/clutter-stage.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/clutter/clutter-stage.c b/clutter/clutter-stage.c
index b38d70d..39514f5 100644
--- a/clutter/clutter-stage.c
+++ b/clutter/clutter-stage.c
@@ -4610,9 +4610,9 @@ clutter_stage_skip_sync_delay (ClutterStage *stage)
 /**
  * clutter_stage_set_paint_callback:
  * @stage: a #ClutterStage
- * @callback: (allow none): a callback
- * @data: (allow none): data to be passed to @callback
- * @notify: (allow none): function to be called when the callback is removed
+ * @callback: (allow-none): a callback
+ * @data: (allow-none): data to be passed to @callback
+ * @notify: (allow-none): function to be called when the callback is removed
  *
  * Sets a callback function to be invoked after the @stage has been
  * painted.