[zenity] User docs: Make page ID the same as file name

[Andre Klapper <aklapper src gnome org>]

commit 3321275c4505a81562385c06b96725ab37ddd6b9
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Mar 23 21:53:43 2014 +0100

    User docs: Make page ID the same as file name

 help/C/intro.page |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/intro.page b/help/C/intro.page
index 8a7bdec..e6f279b 100644
--- a/help/C/intro.page
+++ b/help/C/intro.page
@@ -1,6 +1,6 @@
 <page xmlns="http://projectmallard.org/1.0/";
       type="topic"
-      id="introduction">
+      id="intro">
 <info>
   <link type="guide" xref="index"/>
   <desc><app>Zenity</app> enables you to create the various types of simple dialog.</desc>