[w3c/webauthn] 779194: Address @equalsJeffH's review comments

  Branch: refs/heads/issue-953-relax-notallowederror-requirement
  Home:   https://github.com/w3c/webauthn
  Commit: 7791942ad02b961b46731b6d8b251061dec7c99f
      https://github.com/w3c/webauthn/commit/7791942ad02b961b46731b6d8b251061dec7c99f
  Author: Emil Lundberg <emil@yubico.com>
  Date:   2018-06-26 (Tue, 26 Jun 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Address @equalsJeffH's review comments



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