odoo/documentation#12737

Created by fw-bot
Merged at 451b37efca6571434a7ad1046b2b5be26f28ce1a

Statuses:

label
odoo-dev:saas-18.2-18.0-website-howto-building-blocks-bram-426947-fw
head
6bb9e15d59c48611edc0087a885536150cbc8134
merged
3 months ago by Brandon Mercier (bram)
odoo/documentation
18.0 #12721
saas-18.1 #12735
saas-18.2 #12737
saas-18.3
master #12743

[FW][IMP] howto/website_themes: Building blocks page update

This PR applies the following changes:
- Change the Github urls to the correct version of Odoo
- Adapt the way of creating a snippet template and how to add it to the builder
- Add explanation about how to make a custom snippet "inner content"

task-4316707

Forward-Port-Of: #12721