[el] updated functions.md to 1.3.0 (#2737)
[el] updated functions.md to 1.3.0 (#2737)


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