[FIX] doc: set version for version dropdown
[FIX] doc: set version for version dropdown

The version number is used in the version dropdown in the the switcher_list.html
file as well as in the page title

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo