[FIX] test_main_flows: fix issue with button name
[FIX] test_main_flows: fix issue with button name

Commit 4c31a758cf0715b1c1ff2f5b3cef18fec92c2d84 changed the name of a button, but the test wasn't updated correctly.

PR: none
Task: none

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