[haskell-http-client] Bug in generated file when `dateTimeFormat` parameter set

Created by: frincon

Description

When specified dateTimeFormat the module generated does not compile. The problem is in the this line: https://github.com/OpenAPITools/openapi-generator/blob/31827f5f35a049ec70697d642ce966c3b4499aac/modules/openapi-generator/src/main/resources/haskell-http-client/Core.mustache#L429

Wrong trailing comma!

openapi-generator version

Master

OpenAPI declaration file content or url

Any API