Added a couple more 'nodump' tags

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@6837 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

chapter09/reboot.xml

@@ -43,13 +43,13 @@ umount $LFS/sys</userinput></screen>
 <para>If multiple partitions were created, unmount the other
 partitions before unmounting the main one, like this:</para>
 
-<screen><userinput>umount $LFS/usr
+<screen role="nodump"><userinput>umount $LFS/usr
 umount $LFS/home
 umount $LFS</userinput></screen>
 
 <para>Now, reboot the system with:</para>
 
-<screen><userinput>shutdown -r now</userinput></screen>
+<screen role="nodump"><userinput>shutdown -r now</userinput></screen>
 
 <para>Assuming the GRUB boot loader was set up as outlined earlier, the menu
 is set to boot <emphasis>LFS &version;</emphasis> automatically.</para>