Schemes in Swagger v2 representations

[yken2257]

In all the Swagger v2 representations below, "http" is designated as "schemes".
https://github.com/sendgrid/sendgrid-oai#swagger-v2

However, I suppose the "schemes" should be "https", since every requests to http://api.sendgrid.com time out.
When I imported these Swagger v2 representations into Postman, it didn't work because of time-out.

Sorry if this is the wrong forum to ask this, I'd be appreciated your response.

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