Bug 26944: Point help link to automatic item mod in manual

Bug 26944: Point help link to automatic item mod in manual

To test:
1 - go to automatic item mod, click help, end up at manual homepage
2 - apply patch, restart, reload page
3 - click link again, go to auto item mod in manual

Signed-off-by: Sally <sally.healey@cheshiresharedservices.gov.uk>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit 308b03a31b95a8808751b98d3b285adcb370f47f)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>