bson gem doesn't follow schema defined in README

[teovoinea]

Specifically the vendor_patch field.

ruby-advisory-db/gems/bson/CVE-2015-4412.yml

Lines 11 to 13 in e0b4eec

	vendor_patch:
	- https://github.com/mongodb/mongo-ruby-driver/compare/6ae981167759d5819ba3d41e374e5b2af5b79077~1...9859a3ab9773a8a883eb8438b665a921cc991c71
	- https://github.com/mongodb/bson-ruby/compare/7446d7c6764dfda8dc4480ce16d5c023e74be5ca...28f34978a85b689a4480b4d343389bf4886522e7

[phillmv]

Good catch. Maybe convert it to a url field?