[JA] Fix sample code for "Belongs To/Has One" (#2194)
[JA] Fix sample code for "Belongs To/Has One" (#2194)


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