[gtk+] app-chooser-button: add a note in the docs

[Cosimo Cecchi <cosimoc src gnome org>]

commit b17f0338578344ff44f5d9369b7f2124afd387b3
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Dec 1 16:33:34 2010 +0100

    app-chooser-button: add a note in the docs

 gtk/gtkappchooserbutton.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkappchooserbutton.c b/gtk/gtkappchooserbutton.c
index d9cf438..11f73be 100644
--- a/gtk/gtkappchooserbutton.c
+++ b/gtk/gtkappchooserbutton.c
@@ -708,6 +708,8 @@ gtk_app_chooser_button_append_custom_item (GtkAppChooserButton *self,
  *
  * Selects a custom item previously added with
  * gtk_app_chooser_button_append_custom_item().
+ * Use gtk_app_chooser_refresh() to bring the selection to its initial
+ * state.
  *
  * Since: 3.0
  */