Bug 25618: Fix wrong package install path for misc dir

Bug 25618: Fix wrong package install path for misc dir

root@koha-debian9:/# koha-z3950-responder --start d9
[....] Starting Z39.50/SRU daemon for d9:Can't open perl script "/usr/share/koha/bin/z3950_responder.pl/z3950_responder.pl": Not a directory
 failed!

Test plan:
On a dev install, copy the debian script and run it
Same on a package install

Signed-off-by: Joonas Kylmälä <joonas.kylmala@helsinki.fi>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>