Bug 27406: Update elasticsearch mapping to adhere to ACC2

Bug 27406: Update elasticsearch mapping to adhere to ACC2

This patch changes the 1 occurance of an input of type="number" to input
type="text" inputmode="numeric" pattern="[0-9]*"

Test plan:
open the file and ensure that no other inputs of type="number"
were missed

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>