chapter06: file contents xref is missing

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11963 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter06/file.xml

@@ -64,8 +64,7 @@
 
   <sect2 role="content">
     <title/>
-    <para>Details on this package are located in<!-- TODO
-    <xref linkend="contents-file" role="."/>      --></para>
+    <para>Details on this package are located in <xref linkend="contents-file" role="."/></para>
 
   </sect2>