Update CITATION (#3873)
Update CITATION (#3873)

As discussed in https://github.com/explosion/spaCy/pull/2167 the citation should look slightly different.
honnibal/spaCy,spacy-io/spaCy,explosion/spaCy,spacy-io/spaCy,explosion/spaCy,spacy-io/spaCy,spacy-io/spaCy,spacy-io/spaCy,spacy-io/spaCy,explosion/spaCy,explosion/spaCy,honnibal/spaCy,explosion/spaCy,explosion/spaCy,honnibal/spaCy,honnibal/spaCy