[IMP] base: use en_US writing
[IMP] base: use en_US writing

While licence is technically correct, it is not used in America
Change only the label as the key is used at other places (e.g. app store)

closes odoo/odoo#35350

Signed-off-by: Martin Trigaux (mat) <cc7c5be316e48d137cbb549833b85d91034d799d@odoo.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo