[GRASS-git] [OSGeo/grass-website] d7fbd6: Update windows.en.md

[Paulo van Breugel]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-website
  Commit: d7fbd6fcf9170bbc997a09382bc513674f65cd93
      https://github.com/OSGeo/grass-website/commit/d7fbd6fcf9170bbc997a09382bc513674f65cd93
  Author: Paulo van Breugel <p.vanbreugel at gmail.com>
  Date:   2022-01-23 (Sun, 23 Jan 2022)

  Changed paths:
    M content/download/windows.en.md

  Log Message:
  -----------
  Update windows.en.md

change http to https for osgeo4w downloads