[w3c/webauthn] 4ddc3c: add presentation admonition wrt name-ish strings

  Branch: refs/heads/jeffh-fix-593-domstring-contents
  Home:   https://github.com/w3c/webauthn
  Commit: 4ddc3c01cef292617da9fbad17ed2fe5731d0b45
      https://github.com/w3c/webauthn/commit/4ddc3c01cef292617da9fbad17ed2fe5731d0b45
  Author: JeffH <Jeff.Hodges@PayPal.com>
  Date:   2018-07-11 (Wed, 11 Jul 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  add presentation admonition wrt name-ish strings



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