makefile: install examples to $(PREFIX)/share/microscheme/examples/
makefile: install examples to $(PREFIX)/share/microscheme/examples/

The microscheme package in nixpkgs[1] already does this, but I think it
belongs in the upstream project.

[1]: https://nixos.org/nix://nixos.org/nix/

technomancy/microscheme,technomancy/microscheme,ryansuchocki/microscheme,ryansuchocki/microscheme