Fix issues in pt/lessons/ecto/changesets/ (#1938)
Fix issues in pt/lessons/ecto/changesets/ (#1938)


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