[IMP] website: move parallax option below background image options
[IMP] website: move parallax option below background image options

Part of https://github.com/odoo/odoo/pull/30986
task-1939869

closes odoo/odoo#30986

Signed-off-by: Quentin Smetz (qsm) <75b324bb495ac8d4f83496f7c52eda774af7ed7a@odoo.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo