[gtk+] docs: remove spurious quotation mark

[William Jon McCann <mccann src gnome org>]

commit eb0f1c63ba6f99a0d8e55884b0b13df65e0eedec
Author: William Jon McCann <william jon mccann gmail com>
Date:   Tue Jan 28 15:57:47 2014 -0500

    docs: remove spurious quotation mark

 gtk/gtkdialog.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkdialog.c b/gtk/gtkdialog.c
index 76cd521..2e7b607 100644
--- a/gtk/gtkdialog.c
+++ b/gtk/gtkdialog.c
@@ -145,7 +145,7 @@
  * <title>A #GtkDialog UI definition fragment.</title>
  * <programlisting><![CDATA[
  * <object class="GtkDialog" id="dialog1">
- *   <child internal-child="vbox">"
+ *   <child internal-child="vbox">
  *     <object class="GtkVBox" id="vbox">
  *       <child internal-child="action_area">
  *         <object class="GtkHButtonBox" id="button_box">