Fix typo

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1279 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter01/acknowledgements.xml

@@ -63,7 +63,7 @@ on behalf of <ulink url="http://www.linux.com">Linux.com</ulink>, donated
 a VA Linux 420 (former StartX SP2) workstation 
 towards this project.</para></listitem>
 
-<listitem><para><ulink url="johan@linuxfromscratch.org">Johan
+<listitem><para><ulink url="mailto:johan@linuxfromscratch.org">Johan
 Lenglet</ulink> &lt;johan@linuxfromscratch.org&gt; for leading the French 
 LFS translation project.</para></listitem>