[gtk+] Small docs improvement

[Matthias Clasen <matthiasc src gnome org>]

commit a7ee3a6d806e66a661d3dc393494e5d1e8b6da92
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun May 1 11:28:37 2016 -0400

    Small docs improvement
    
    Cross reference from gdk_event_get_keycode to
    gdk_event_get_scancode.

 gdk/gdkevents.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkevents.c b/gdk/gdkevents.c
index 1a79df0..44d5013 100644
--- a/gdk/gdkevents.c
+++ b/gdk/gdkevents.c
@@ -1297,6 +1297,8 @@ gdk_event_get_keyval (const GdkEvent *event,
  *
  * Extracts the hardware keycode from an event.
  *
+ * Also see gdk_event_get_scancode().
+ *
  * Returns: %TRUE if the event delivered a hardware keycode
  *
  * Since: 3.2