Typo in mpc title

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@9258 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/mpc.xml

@@ -14,7 +14,7 @@
     <address>&mpc-url;</address>
   </sect1info>
 
-  <title>MPC-&make-version;</title>
+  <title>MPC-&mpc-version;</title>
 
   <indexterm zone="ch-system-mpc">
     <primary sortas="a-MPC">MPC</primary>