[FW][FIX] sales: fixed a loyalty card specificity

[fw-bot]

implemented a necessary fix, as requested here: https://github.com/odoo/documentation/issues/9041

only line 88 was adjusted to adhere to the suggested fix (found in the link above)

This change should be forward ported

Forward-Port-Of: odoo/documentation#9225

[robodoo]

Pull request status dashboard.

[fw-bot]

This PR targets saas-17.1 and is part of the forward-port chain. Further PRs will be created up to master.

More info at https://github.com/odoo/odoo/wiki/Mergebot#forward-port