[FIX] doc: update obsolete openobject link
[FIX] doc: update obsolete openobject link

The library https://github.com/syleam/openobject-library is obsolete
and advises to use OdooRPC instead.

Closes #26596

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