[FIX] doc: warning & P3 compatibility

doc/_extensions/autojsdoc/__main__.py

doc/_extensions/autojsdoc/parser/jsdoc.py

doc/_extensions/autojsdoc/parser/parser.py

doc/_extensions/autojsdoc/parser/utils.py

doc/_extensions/odoo_ext/translator.py

doc/_extensions/pyjsdoc/LICENSE

doc/_extensions/pyjsdoc/__init__.py

doc/_extensions/pyjsparser/parser.py

doc/_extensions/pyjsparser/pyjsparserdata.py

doc/cla/stats.py

doc/howtos/backend/exercise-access-rules

doc/howtos/backend/exercise-demo

doc/howtos/backend/exercise-domain-advanced

doc/howtos/backend/exercise-formview

doc/howtos/backend/exercise-gantt

doc/howtos/backend/exercise-graph

doc/howtos/backend/exercise-kanban

doc/howtos/backend/exercise-session

doc/howtos/backend/exercise-wizard-action

doc/howtos/backend/exercise-wizard-launch