[pygtk] Update docs for class gtk.Dialog

[Gian Mario Tagliaretti <gianmt src gnome org>]

commit 8589d67f2efbf72b4eecc83de4efcc06dacc3f8b
Author: Gian Mario Tagliaretti <gianmt gnome org>
Date:   Thu Aug 13 17:33:49 2009 +0200

    Update docs for class gtk.Dialog

 docs/reference/pygtk-gtkdialog.xml |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/pygtk-gtkdialog.xml b/docs/reference/pygtk-gtkdialog.xml
index 40c893e..4691a29 100644
--- a/docs/reference/pygtk-gtkdialog.xml
+++ b/docs/reference/pygtk-gtkdialog.xml
@@ -199,6 +199,15 @@ pixels.</entry>
 	    </row>
 
 	    <row valign="top">
+	      <entry>"content-area-spacing"</entry>
+	      <entry>Read</entry>
+	      <entry>The default spacing used between elements of the content area of the dialog, as returned by
+	      <methodname><link linkend="method-gtkdialog--get-content-area">gtk.Dialog.get_content_area</link></methodname>(),
+	      unless <methodname><link linkend="method-gtkbox--set-spacing">gtk.Box.set_spacing</link></methodname>()
+	      was called on that widget directly. Allowed values: >= 0. Default value: 0. This property is available in GTK+ 2.16 and above.</entry>
+	    </row>
+
+	    <row valign="top">
 	      <entry>"content-area-border"</entry>
 	      <entry>Read</entry>
 	      <entry>The width of the border around the main dialog area in