Bug 34340: Changed "Tendered" to the correct input id which is "Collected"

Bug 34340: Changed "Tendered" to the correct input id which is "Collected"

Must also apply bug 34332 - fixed a syntax error for the pos email template

To test:
1. Configure your Koha to enable the point of sale system (i.e. enable syspref,
   set up a register, set up an item to sell).
2. Complete a transaction in the POS system.
3. Click on the “Email receipt” button next to the “Print receipt” option and
   enter an email address and confirm that the email is sent.
4. Check the “Tendered” field. It is showing up as 0.00 and not reflecting the
   actual amount that was tendered.
5. Apply patch
6. Repeat steps 2 & 3
7. The emailed receipt is now showing the correct tendered amount.
8. Sign off!

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>