Bug 19215: Fixing typo in URL for patron clubs

Bug 19215: Fixing typo in URL for patron clubs

To test:
1) Go to Tools -> Clubs
2) Create a new club template if you do not already have one
3) Edit the template
4) Notice the URL is incorrect and the page is not found
5) Apply patch and go back to Clubs
6) Click edit button
7) Link should work as expected

Sponsored-by: Catalyst IT
Signed-off-by: Claire Gravely <claire.gravely@bsz-bw.de>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>