[GRASS-git] [OSGeo/grass-addons] b2a0aa: docs: update submitting guideline url (#860)

[Nicklas Larsson]

  Branch: refs/heads/grass8
  Home:   https://github.com/OSGeo/grass-addons
  Commit: b2a0aa8a603d6b5afa9addaa69e65376df93fbfb
      https://github.com/OSGeo/grass-addons/commit/b2a0aa8a603d6b5afa9addaa69e65376df93fbfb
  Author: Nicklas Larsson <n_larsson at yahoo.com>
  Date:   2023-02-27 (Mon, 27 Feb 2023)

  Changed paths:
    M CONTRIBUTING.md
    M SUBMITTING

  Log Message:
  -----------
  docs: update submitting guideline url (#860)