[GRASS-web] [OSGeo/grass-website] f7f0b7: Fix link to trac

[Markus Neteler]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-website
  Commit: f7f0b70b9874a7e51db3d453a5a185c1847de70d
      https://github.com/OSGeo/grass-website/commit/f7f0b70b9874a7e51db3d453a5a185c1847de70d
  Author: Markus Neteler <neteler at gmail.com>
  Date:   2020-04-12 (Sun, 12 Apr 2020)

  Changed paths:
    M content/contribute/development.md

  Log Message:
  -----------
  Fix link to trac