[FIX] website_event: correct typo in new API conversion
[FIX] website_event: correct typo in new API conversion

event.event's field is 'country_id', not 'country'

Cfr 616f294786761e52478b93234fac44e7458c82e6

dfang/odoo,ygol/odoo,dfang/odoo,ygol/odoo,dfang/odoo,hip-odoo/odoo,ygol/odoo,dfang/odoo,hip-odoo/odoo,hip-odoo/odoo,hip-odoo/odoo,ygol/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,dfang/odoo