message: Add comment about startup delay.
diff: @@ -50,6 +50,7 @@ impl TestChain {
  })
  .collect();
  // TODO: This is duplicated. Remove the `HighwayConfig` field.
  + // Make the genesis timestamp 30 seconds from now, to allow for all validators to start up.
  chainspec.genesis.timestamp = Timestamp::now() + 30000.into();
  chainspec.genesis.highway_config.genesis_era_start_timestamp = chainspec.genesis.timestamp;
  