[w3c/webauthn] ada317: Expand OS acronym in section title

  Branch: refs/heads/issue-96-os-account-privacy
  Home:   https://github.com/w3c/webauthn
  Commit: ada317e91a3bcdeb9c24c1bc7a4b6568ca94bdbb
      https://github.com/w3c/webauthn/commit/ada317e91a3bcdeb9c24c1bc7a4b6568ca94bdbb
  Author: Emil Lundberg <emil@yubico.com>
  Date:   2018-07-09 (Mon, 09 Jul 2018)

  Changed paths:
    M index.bs

  Log Message:
  -----------
  Expand OS acronym in section title



      **NOTE:** This service 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.