Version Control With Subversion Source

* doc/book/book/ch03.xml
Use consistent spacing in example shell prompts.
Fix name of option "--non-recursive".

* doc/book/book/ch08.xml
Fix use of "svn up" to "svn update". (From Larry Shatzer.)
Use <quote> instead of ""'s. (From Larry Shatzer.)
Use consistent spacing in example shell prompts.