[GRASS-git] [OSGeo/grass] f3c6ef: r.blend: add screenshot in documentation (#3045)

[Brendan Harmon]

  Branch: refs/heads/main
  Home:   https://github.com/OSGeo/grass
  Commit: f3c6efd1ab6fed713d1dc4a9201f976b26098492
      https://github.com/OSGeo/grass/commit/f3c6efd1ab6fed713d1dc4a9201f976b26098492
  Author: Brendan Harmon <brendan.harmon at gmail.com>
  Date:   2023-06-10 (Sat, 10 Jun 2023)

  Changed paths:
    M scripts/r.blend/r.blend.html
    A scripts/r.blend/r_blend.png

  Log Message:
  -----------
  r.blend: add screenshot in documentation (#3045)