added missing shred

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1280 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

appendixa/fileutils-desc.xml

@@ -3,7 +3,7 @@
 
 <para>The Fileutils package contains the chgrp, chmod, chown, cp, dd, df, dir,
 dircolors, du, install, ln, ls, mkdir, mkfifo, mknod, mv, rm, rmdir,
-sync, touch and vdir programs.</para>
+shred, sync, touch and vdir programs.</para>
 
 </sect2>