Update validation.rb to have a translated `detail`
Update validation.rb to have a translated `detail`

Use [`full_message(attribute, message)` method from ActiveModel::Errors](https://github.com/rails/rails/blob/99c604f1f9de2f2a6fc3d0aec4f274cb05b48c69/activemodel/lib/active_model/errors.rb#L363) to return an automatically translated detail message
jsonapi-suite/jsonapi_errorable,jsonapi-suite/jsonapi_errorable