message: Fix formatting in shadowbox config
diff: @@ -251,7 +251,8 @@ function write_config() {
  if [[ $FLAGS_KEYS_PORT != 0 ]]; then
  config+=("\"portForNewAccessKeys\": $FLAGS_KEYS_PORT")
  fi
  - config+=$(printf '"hostname": "%q"' ${PUBLIC_HOSTNAME})
  + # printf is needed to escape the hostname.
  + config+=("$(printf '"hostname": "%q"' ${PUBLIC_HOSTNAME})")
  echo "{"$(join , "${config[@]}")"}" > $STATE_DIR/shadowbox_server_config.json
  }
  