[GRASS-git] [OSGeo/grass] 7a6029: howto_release.md: fix link to latest MD file

[Markus Neteler]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass
  Commit: 7a6029ccc7d047a50c7a7e6f2c0028342be4d5a6
      https://github.com/OSGeo/grass/commit/7a6029ccc7d047a50c7a7e6f2c0028342be4d5a6
  Author: Markus Neteler <neteler at gmail.com>
  Date:   2020-12-21 (Mon, 21 Dec 2020)

  Changed paths:
    M doc/howto_release.md

  Log Message:
  -----------
  howto_release.md: fix link to latest MD file