[gtk+] docs: Fix make dist

[Rico Tzschichholz <ricotz src gnome org>]

commit 3f140d5391ba76ead938f4bab88911e1ba7080c9
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat May 24 12:16:56 2014 +0200

    docs: Fix make dist

 docs/reference/gtk/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/Makefile.am b/docs/reference/gtk/Makefile.am
index 8206452..ee7e155 100644
--- a/docs/reference/gtk/Makefile.am
+++ b/docs/reference/gtk/Makefile.am
@@ -157,6 +157,7 @@ content_files =                                     \
        gtk-update-icon-cache.xml               \
        gtk-launch.xml                          \
        broadwayd.xml                           \
+       input-handling.xml                      \
        visual_index.xml                        \
        getting_started.xml                     \
        overview.xml