[FIX] l10n_do: use the right sign on every tax tags
[FIX] l10n_do: use the right sign on every tax tags

Some signs had been inverted when converting from 12.2 to 12.3 model.

closes odoo/odoo#34817

Signed-off-by: Laurent Smet <1328e3a5817ff065354bd0f7f4073cbb6dcc7eca@users.noreply.github.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo