[GRASS-web] [OSGeo/grass-website] caa2d9: fix date of bug tracking migration to GH

[Veronica Andreo]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-website
  Commit: caa2d9ca971f546d91fa5a6a6e7459a983cbb128
      https://github.com/OSGeo/grass-website/commit/caa2d9ca971f546d91fa5a6a6e7459a983cbb128
  Author: Veronica Andreo <veroandreo at gmail.com>
  Date:   2020-04-11 (Sat, 11 Apr 2020)

  Changed paths:
    M content/about/history.md

  Log Message:
  -----------
  fix date of bug tracking migration to GH