[bootlin/training-materials] 6ba220: sysdev: slides: licensing: add link to tl;drLegal

[Luca Ceresoli]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: 6ba220f2943daa603a6d23ed550174b820828106
      https://github.com/bootlin/training-materials/commit/6ba220f2943daa603a6d23ed550174b820828106
  Author: Luca Ceresoli <luca.ceresoli at bootlin.com>
  Date:   2023-03-10 (Fri, 10 Mar 2023)

  Changed paths:
    M slides/sysdev-licensing/sysdev-licensing.tex

  Log Message:
  -----------
  sysdev: slides: licensing: add link to tl;drLegal

Thanks to Théo Lebrun for sharing this link!

Signed-off-by: Luca Ceresoli <luca.ceresoli at bootlin.com>