message: Normalize aarch64 installer target
diff: @@ -25,6 +25,10 @@ normalize_target() {
  echo "x86_64-unknown-linux-musl"
  return 0
  ;;
  + aarch64-unknown-linux-gnu)
  + echo "aarch64-unknown-linux-musl"
  + return 0
  + ;;
  esac
  echo "${_target}"
  