updated Reformer CausalFavor link
updated Reformer CausalFavor link

PiperOrigin-RevId: 338752157

google-research/google-research,google-research/google-research,google-research/google-research,google-research/google-research,google-research/google-research,google-research/google-research,google-research/google-research,google-research/google-research,google-research/google-research,google-research/google-research,google-research/google-research