[IMP] product: product view change the group string
[IMP] product: product view change the group string

Rename 'Purchase Bill' into 'Vendor Bills' to be consistent with the
labels of module purchase.

TASK-38741

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