[Svn] [roundcube/roundcubemail] 4c8736: Fix typo

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/roundcube/roundcubemail
  Commit: 4c8736755f2af787171a0b6902787677224a85f1
      https://github.com/roundcube/roundcubemail/commit/4c8736755f2af787171a0b6902787677224a85f1
  Author: Aleksander Machniak <alec at alec.pl>
  Date:   2018-02-11 (Sun, 11 Feb 2018)

  Changed paths:
    M config/defaults.inc.php

  Log Message:
  -----------
  Fix typo