Bug 31869: Unable to save thesaurus value to frameworks subfields

Bug 31869: Unable to save thesaurus value to frameworks subfields

This patch correct a typo authtypecodes for authtypecode

To test:
1. Edit e.g. default frameworks subfield 100$a
2. Add or change fields thesaurus value
3. Save your changes
   => note that on subfield listing there is no mention that 100$a is linked to any thesaurus
   => if you edit 100$a thesaurus input is empty
4. Apply patch
5. Edit subfield 100$a and set a thesaurus value
6. Confirm it saves and displays correctly

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>