set under construction message

docs/application/description.md

docs/application/gitflow.md

docs/getting_started/launch_local_application.md

docs/getting_started/launch_local_konnector.md

docs/getting_started/setup_your_environment.md

docs/konnectors/egl.md

docs/konnectors/enedis.md

docs/konnectors/grdf.md

docs/project_architecture/architecture.md

docs/project_architecture/cozy.md

docs/project_architecture/doctypes.md

docs/project_architecture/environments.md

docs/proxy/description.md

mkdocs.yml