[FIX] website: correct snippet structure of .s_title
[FIX] website: correct snippet structure of .s_title

Commit 744cd64b53fe067d976367f96b8dcf26f3104bda re-added the removed
col system in the title snippet but did not respect the odoo structure
which is section > .container [> .row > .col-*] and put the container
class directly on the section. With this method, when changing the
background of the snippet, only the container part is filled
with background.

dfang/odoo,ygol/odoo,ygol/odoo,ygol/odoo,hip-odoo/odoo,hip-odoo/odoo,dfang/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,hip-odoo/odoo,ygol/odoo,hip-odoo/odoo,dfang/odoo,ygol/odoo,dfang/odoo