Following this PR odoo/odoo#97398 website_slides module was forgotten This commit add 'sanitize_overridable' parameter to the html_content field. This will allow one to use the embed snippet in an article type slide. Task-3134690 closes odoo/odoo#112534 X-original-commit: 627833e77eb8f7ef7850f1fdeeb115ee8870c7f9 Signed-off-by: Warnon Aurélien (awa) <awa@odoo.com>