README: Make Elixir and Erlang instructions looking similar each other.
README: Make Elixir and Erlang instructions looking similar each other.

rgolubtsov/dnsresolvd-multilang,rgolubtsov/dnsresolvd-multilang,rgolubtsov/dnsresolvd-multilang,rgolubtsov/dnsresolvd-multilang,rgolubtsov/dnsresolvd-multilang,rgolubtsov/dnsresolvd-multilang,rgolubtsov/dnsresolvd-multilang