[w3c/webauthn] 5517fe: Address most of @equalsJeffH's review comments

  Branch: refs/heads/issue-1024-fido-u2f-attca
  Home:   https://github.com/w3c/webauthn
  Commit: 5517fee373facef863b2f0e11159150aae6b7e20
      https://github.com/w3c/webauthn/commit/5517fee373facef863b2f0e11159150aae6b7e20
  Author: Emil Lundberg <emil@yubico.com>
  Date:   2018-09-17 (Mon, 17 Sep 2018)

  Changed paths:
    M index.bs

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

See
https://github.com/w3c/webauthn/pull/1054#pullrequestreview-152585106



      **NOTE:** This service has been marked for deprecation: https://developer.github.com/changes/2018-04-25-github-services-deprecation/

      Functionality will be removed from GitHub.com on January 31st, 2019.