This commit aims to fix an issue on forum posts, about comments being
placed directly next to each other without having a gap between them,
making it harder to visually recognize items at first glance.
To handle this issue, we simply add a `d-flex gap-x` utility classes
to ensure these elements receive some spacing between them.
closesodoo/odoo#155364
Signed-off-by: Julien Castiaux (juc) <juc@odoo.com>