odoo/documentation#6318

Created by Nathan Marotte (nama)
Merged at c6c45989288bed83ed574cbfd03a7dbf81a78d83

Statuses:

label
odoo-dev:14.0-backport_upgrade_doc-3171474-nama
head
0955063fd4d771ddbfb02679bda5f42b794128a5
merged
2 years ago by Documentation, Xavier Platteau (xpl)
odoo/documentation
14.0 #6318
15.0 #6392
saas-15.2 #6393
16.0
17.0
18.0
saas-18.2
saas-18.3
saas-18.4
19.0
master

[IMP] upgrade: overhaul upgrade doc

Backport of #6274