cookbook: Link out to docbook site

Corrected the link on the word Docbook, as it
was an internal <link> rather than an external
<ulink>.

diff --git a/doc/cookbook/clutter-cookbook.xml.in b/doc/cookbook/clutter-cookbook.xml.in
index 655b72f..06ab777 100644 (file)
--- a/doc/cookbook/clutter-cookbook.xml.in
+++ b/doc/cookbook/clutter-cookbook.xml.in
@@ -50,7 +50,7 @@
     <title>Contributing to this document</title>
 
     <para>This document is written in
-    <link url="http://docbook.org/">Docbook XML</link>. The source files
+    <ulink url="http://docbook.org/">Docbook XML</ulink>. The source files
     for this document are located in the subdirectory
     <filename>doc/cookbook</filename> inside the Clutter source directory.</para>