broken link on homepage

[Ryan McKinley]

I know this was mentioned recently... but it seems important to fix pre 
1.2 official release.

The *"Faceted Searching With Apache Solr"* is a big bold link on the 
front page that links to 404.

If we are uncomfortable updating the link to an existing file (so as not 
to "edit history") we should at least remove the link.  Linking to a 404 
on the front page is a bad sign to anyone starting to check out solr.

ryan