[gtk+] GtkApplicationWindow: Fix typos

[Timm Bäder <baedert src gnome org>]

commit d9de02e1ca385f21f09d72c4f9b98765f4ab8810
Author: Timm Bäder <mail baedert org>
Date:   Sat Nov 14 22:19:58 2015 +0100

    GtkApplicationWindow: Fix typos

 gtk/gtkapplicationwindow.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkapplicationwindow.c b/gtk/gtkapplicationwindow.c
index 86739a4..7174edc 100644
--- a/gtk/gtkapplicationwindow.c
+++ b/gtk/gtkapplicationwindow.c
@@ -979,7 +979,7 @@ show_help_overlay (GSimpleAction *action,
  * @help_overlay: a #GtkShortcutsWindow
  *
  * Associates a shortcuts window with the application window, and
- * sets up a action with the name win.show-help-overay to present
+ * sets up an action with the name win.show-help-overlay to present
  * it.
  *
  * Since: 3.20