[GRASS-git] [OSGeo/grass-website] c90ddf: Update README.md

[Nicolas Bozon]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-website
  Commit: c90ddff05a62d7643a05569abf4c1d68dc351140
      https://github.com/OSGeo/grass-website/commit/c90ddff05a62d7643a05569abf4c1d68dc351140
  Author: Nicolas Bozon <nicolas.bozon at gmail.com>
  Date:   2019-12-06 (Fri, 06 Dec 2019)

  Changed paths:
    M README.md

  Log Message:
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  Update README.md