Refactor language update (#4316)
Refactor language update (#4316)

* refactor: separate formatting docs and golds in Language.update

* fix return typo

explosion/spaCy,spacy-io/spaCy,explosion/spaCy,spacy-io/spaCy,explosion/spaCy,explosion/spaCy,honnibal/spaCy,honnibal/spaCy,spacy-io/spaCy,spacy-io/spaCy,honnibal/spaCy,explosion/spaCy,spacy-io/spaCy,honnibal/spaCy,explosion/spaCy,spacy-io/spaCy