Fix wrong class name in jit _make_fail (#15559)
Summary:
It should be ScriptModule rather than TracedModule :)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/15559
Differential Revision: D13552058
Pulled By: soumith
fbshipit-source-id: 0aa17639c225818b00d59daec4bc2336f039f658
