Bug 22220: Fix bib Apache rewrite rule for intranet

Bug 22220: Fix bib Apache rewrite rule for intranet

Trivial change. Speaks for itself.
Since koha/detail.pl does not exist, we cannot break things ;)

Test plan:
[1] Copy the change in apache-shared-intranet.conf to your actual
    apache configuration. Probably in /etc/koha/.
[2] Restart Apache.
[3] Try a biblionumber say 123 on intranet with [your_staff_client]/bib/123.
    Does the detail page come up?

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Joy Nelson <joy@bywatersolutions.com>