Book: More indentation fixes.
Book: More indentation fixes.

Patch by: Julian Foad <julianfoad@btopenworld.com>

* doc/book/book/ch08.xml:
  Fixed indentation in some <screen> blocks.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion