[OpenSIPS-Devel] [OpenSIPS/opensips] 21dae8: Fix mantainer-clean -> maintainer-clean typo

[Walter Doekes]

  Branch: refs/heads/3.0
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 21dae83c2659edfa0b2a10ed3ebe616084cf0b6b
      https://github.com/OpenSIPS/opensips/commit/21dae83c2659edfa0b2a10ed3ebe616084cf0b6b
  Author: Walter Doekes <walter+github at wjd.nu>
  Date:   2019-04-24 (Wed, 24 Apr 2019)

  Changed paths:
    M INSTALL
    M Makefile.rules
    M modules/seas/event_dispatcher.c

  Log Message:
  -----------
  Fix mantainer-clean -> maintainer-clean typo

(cherry picked from commit 884f6305313dfdd6846b5c21c175a060c2fd263d)