odoo/upgrade-util#341

Created by Upgrade, Alvaro Fuentes Suarez (afu)

Blocked

label
odoo-dev:master-doc_improvments-afu
head
1fe9485e38cb1f704adb5faec44b6de4011849fd
odoo/upgrade-util
master #341 missing r+

[IMP] src/testing: improve docs

Fix some RST syntax issues in parametrize docs. Take the opportunity to
improve its docstring. Clarify IntegrityCase.