Documentation for bindings does not appear in documentation in readthedocs.io

[Quanalogy]

The documentation for crypto_sign_ed25519_pk_to_curve25519 and crypto_sign_ed25519_sk_to_curve25519 does not appear in the documentation on https://pynacl.readthedocs.io . I would therefore expect that the whole document of nacl.bindings are missing from the documentation.