Document type (#1629)
Document type (#1629)

* Adding DocumentType data to BCD

* Adding DocumentType data to BCD

* Updating as per ExE-Boss review

chrisdavidmills/browser-compat-data,mdn/browser-compat-data,mdn/browser-compat-data,teoli2003/browser-compat-data,chrisdavidmills/browser-compat-data