fix type to choice display value
fix type to choice display value

osmfj/sotmjp-website,pyconjp/pyconjp-website,PyCon/pycon,pyconjp/pyconjp-website,smellman/sotmjp-website,njl/pycon,pyconjp/pyconjp-website,smellman/sotmjp-website,njl/pycon,osmfj/sotmjp-website,Diwahars/pycon,PyCon/pycon,smellman/sotmjp-website,Diwahars/pycon,njl/pycon,osmfj/sotmjp-website,Diwahars/pycon,pyconjp/pyconjp-website,Diwahars/pycon,PyCon/pycon,njl/pycon,smellman/sotmjp-website,osmfj/sotmjp-website,PyCon/pycon