add missing magic potion step

[chbieri]

Signed-off-by: christoph bieri [email protected]

The second "wand waving" in the magic_potion.recipe was confusing me in my playthrough, that I tried to reorder/rename the last commit as well. After several attempts I had to look up the solution in the magic_potion_validation.sh.

I would recommend to simply add the missing step. thanks!