link rot on http://svnbook.red-bean.com/

[CTS-Programmer 4 (Steve Curry)]

FYI. On the root page of http://svnbook.red-bean.com/ the link for the
PDF edition of the nightly build is
http://svnbook.red-bean.com/nightly/en/svn-book.pdf
That link is 404.
No big deal to me, I'll pull down the HTML version.  Just wanted to let
you know.

Steve Curry