[OpenSIPS-Devel] [OpenSIPS/opensips] bb7afd: [exec] improve docs on exec async + launch

[Bogdan Andrei IANCU]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: bb7afdc2dc4363f24d8e28e00ab337c7c174d1e5
      https://github.com/OpenSIPS/opensips/commit/bb7afdc2dc4363f24d8e28e00ab337c7c174d1e5
  Author: Bogdan-Andrei Iancu <bogdan at opensips.org>
  Date:   2020-04-16 (Thu, 16 Apr 2020)

  Changed paths:
    M modules/exec/doc/exec_admin.xml

  Log Message:
  -----------
  [exec] improve docs on exec async + launch

Related to #2049