[BN] Added Translation of advanced/protocols.md (#2732)
[BN] Added Translation of advanced/protocols.md (#2732)

* [BN] Added Translations of advanced/protocols.md

* removed extra space

* replaced `এপিআই` with `API`

* Better translation `এই কষ্ট থেকে মুক্তি পেতে...`
doomspork/elixir-school,doomspork/elixir_school,doomspork/elixir-school,doomspork/elixir_school,doomspork/elixir-school,doomspork/elixir_school