[FIX] doc/views: templates attribute isn't supported in calendar views.
[FIX] doc/views: templates attribute isn't supported in calendar views.

Since
https://github.com/odoo/odoo/commit/369c20a99bd25172f72f4efde870172a4729aadc:
event cards cannot be customized anymore, only the popover is adapted
depending on <field> attributes inside the calendar tag.

Forward-Port-Of: #54984

original commit: 920599a46e1221c03a20e005a7ad5c61fa9107a0

X-original-commit: ef18d482a58bbff24ce1217619df603ec4670002
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo