[FIX] l10n_co: change name of RUT document type to NIT
[FIX] l10n_co: change name of RUT document type to NIT

The RUT is the Registro Único Tributario;
the NIT is the Número de Identificación Tributaria.

The number that is used is thus the NIT.

opw 2082599

closes odoo/odoo#38533

X-original-commit: 1db209acaf44731f1740f038d9fadf464677baf4
Signed-off-by: Nans Lefebvre (len) <a573b540d2dde90ba6da3b9d6286c8ec60c10044@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo