The description for GraphQLInt is incorrect

[MrOrz]

The current description on GraphQLInt, as depicted here, says:

The Int scalar type represents non-fractional signed whole numeric
values. Int can represent values between -(2^53 - 1) and 2^53 - 1 since
represented in JSON as double-precision floating point numbers specified
by IEEE 754.

However, the current implementation complies to GraphQL spec, which confines GraphQLInt to between -2^-31 and 2^31-1.

If we all agree that the description is incorrect and should be updated, I can submit a pull request to update the descriptions to reflect that.