It's not in the `MKTG_URL_LINK_MAP`: https://github.com/edx/edx-platform/blob/6f9a005957a4de660927cae29e4be3d62a016645/lms/envs/common.py#L718. I left it on line https://github.com/edx/edx-platform/blob/6f9a005957a4de660927cae29e4be3d62a016645/lms/urls.py#L101.