[zh-hans] typo in lessons/libraries/benchee.md (#1915)
[zh-hans] typo in lessons/libraries/benchee.md (#1915)


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