Prisma

`prisma.query` is of type `QueryMap`. `prisma.query.users` has the following signature: ```
(args?: {
    [key: string]: any;
}, context?: {
    [key: string]: any;
}, info?: string | GraphQLResolveInfo) =&gt; Promise&lt;any&gt;```

Hi! It seems like you forgot to give the second argument: "context". You only gave the "args" and "info" arguments.

Tried making it `prisma.query.users({}, {}, '{ id name }')` and got an error, `prisma.query.users({}, null, '{ id name }')` works though. Thanks.

Would it be worth updating the docs to show this, or maybe update the type declaration.