Update modimporter.py

[Akuma-Reiki]

allows putting it in atomosphere\contents\0100535012974000\romfs on switch for easier install

[AndreLouisIssa]

That doesn't seem valid:

• the game_aliases dict takes folder to game, so it can use the game to implicitly target the most common lua script, "romfs" is not a game.
• you can't define multiple mappings for the same key in a dict, so either this just removes/breaks the Windows Store support (or the change does nothing).

[AndreLouisIssa]

Now it might work, but give it a try first.