[JA] Translate enum 1.5.0 (#2043)
[JA] Translate enum 1.5.0 (#2043)

* translate ja enum 1.5.0

* Update ja/lessons/basics/enum.md

Co-Authored-By: marocchino <924c959d2f947b2ae3fdeabf5d926a239c5d5ef9@users.noreply.github.com>

doomspork/elixir_school,doomspork/elixir_school,doomspork/elixir-school,doomspork/elixir-school,nscyclone/elixir-school,doomspork/elixir_school,nscyclone/elixir-school,nscyclone/elixir-school,doomspork/elixir-school,nscyclone/elixir-school