[gtk+] GtkApplication: Clarify docs a bit

[Matthias Clasen <matthiasc src gnome org>]

commit 3e80ce39e1ca52bd59c3ed4a08d589519173af70
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon May 5 07:20:31 2014 -0400

    GtkApplication: Clarify docs a bit
    
    Explicitly mention how gtk_application_set_accels_for_action can
    be used to remove all accelerators for an action.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=729451

 gtk/gtkapplication.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkapplication.c b/gtk/gtkapplication.c
index a074e9e..7333c1d 100644
--- a/gtk/gtkapplication.c
+++ b/gtk/gtkapplication.c
@@ -1483,10 +1483,13 @@ normalise_detailed_name (const gchar *detailed_action_name)
  * @accels: (array zero-terminated=1): a list of accelerators in the format understood by
  *     gtk_accelerator_parse()
  *
- * Sets one or more keyboard accelerator that will trigger the
+ * Sets zero or more keyboard accelerators that will trigger the
  * given action. The first item in @accels will be the primary 
  * accelerator, which may be displayed in the UI.
  *
+ * To remove all accelerators for an action, use an empty, zero-terminated
+ * array for @accels.
+ *
  * Since: 3.12
  */
 void