[swell-foop/mallard-help] help: add link to introduction.page from index.page

[Rashi Aswani <aswanirashi src gnome org>]

commit 923a375764aaeefa8309bf8925923184ff5aa853
Author: Rashi Aswani <aswanirashi19 gmail com>
Date:   Thu Jul 17 13:47:16 2014 +0530

    help: add link to introduction.page from index.page

 help/C/index.page |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/help/C/index.page b/help/C/index.page
index 3909e4d..d525630 100644
--- a/help/C/index.page
+++ b/help/C/index.page
@@ -25,7 +25,9 @@
     its:translate="no" />
     Swell-foop
   </title>
-  <p>Swell Foop is a puzzle game, previously known as Same GNOME.</p>
+  <p>Swell Foop is a puzzle game, previously known as Same GNOME. To know more
+  about the game, visit <link xref="introduction">Game introduction</link>.
+  Other help topics are grouped together into sections below.</p>
 
   <section id="play">
     <title>Playing Swell-foop</title>