chore(ci): set `ADDON_DOCS_VERSION_PATH` for docs
chore(ci): set `ADDON_DOCS_VERSION_PATH` for docs

https://github.com/ember-learn/ember-cli-addon-docs/issues/454#issuecomment-584129324
https://github.com/ember-learn/ember-cli-addon-docs/issues/437

ember-intl/ember-intl,ember-intl/ember-intl,ember-intl/ember-intl