[gtk+] docs: add missing docs for GDK_DISABLE_DEPRECATION_WARNINGS

[William Jon McCann <mccann src gnome org>]

commit 921137540ceb3155543f83ca137a3489e2ab4b25
Author: William Jon McCann <william jon mccann gmail com>
Date:   Mon Jan 20 14:28:04 2014 -0500

    docs: add missing docs for GDK_DISABLE_DEPRECATION_WARNINGS

 docs/reference/gdk/gdk3-overrides.txt |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gdk/gdk3-overrides.txt b/docs/reference/gdk/gdk3-overrides.txt
index 71037c6..3ffff9c 100644
--- a/docs/reference/gdk/gdk3-overrides.txt
+++ b/docs/reference/gdk/gdk3-overrides.txt
@@ -23,3 +23,8 @@
 <NAME>GDK_WINDOWING_WAYLAND</NAME>
 #define GDK_WINDOWING_WAYLAND
 </MACRO>
+
+<MACRO>
+<NAME>GDK_DISABLE_DEPRECATION_WARNINGS</NAME>
+#define GDK_DISABLE_DEPRECATION_WARNINGS
+</MACRO>