[es] Updated basics/collextions lesson. (#2306)
[es] Updated basics/collextions lesson. (#2306)


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