propose clarification for Energy (#3525)
propose clarification for Energy (#3525)

* propose clarification for Energy

propose clarification for Energy

* Apply suggestions from code review

* Update data-fields.txt

* Apply suggestions from code review
openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server