[w3c/webauthn] cb84e0: Fix reference to U2F user public key format

  Branch: refs/heads/issue-857-u2f-attestation-verification
  Home:   https://github.com/w3c/webauthn
  Commit: cb84e05c8c58e1aaddd3919891c6a27c17235903
      https://github.com/w3c/webauthn/commit/cb84e05c8c58e1aaddd3919891c6a27c17235903
  Author: Emil Lundberg <emil@yubico.com>
  Date:   2018-04-04 (Wed, 04 Apr 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Fix reference to U2F user public key format


  Commit: b3411467799aa371bbd6adb6314d733055aa3503
      https://github.com/w3c/webauthn/commit/b3411467799aa371bbd6adb6314d733055aa3503
  Author: Emil Lundberg <emil@yubico.com>
  Date:   2018-04-04 (Wed, 04 Apr 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Improve U2F key reformatting instructions as suggested by @apowers

See https://github.com/w3c/webauthn/issues/857


Compare: https://github.com/w3c/webauthn/compare/cb84e05c8c58^...b3411467799a