Currently, when creating a new course from front-end, placeholder for the course description is broken because it's split in multi line in the xml file. This commit fixes the issue by keeping the placeholder in a single line in XML file and thus preventing the gap being displayed between two sentences on front-end. TaskID-2734524 closes odoo/odoo#82973 X-original-commit: 0db1844ddaf1f4cd46152e356dea10f3fd07169a Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>