Incorrect bidder id when generating a bid

[absoludity]

The current code for BidGenerator.nextBid incorrectly adds the FIRST_PERSON_ID two times to the value returned by nextBase0PersonId() call (see lines 84 and 100 below):

nexmark/nexmark-flink/src/main/java/com/github/nexmark/flink/generator/model/BidGenerator.java

Lines 84 to 100 in 54974ef

	bidder += GeneratorConfig.FIRST_PERSON_ID;
	long price = PriceGenerator.nextPrice(random);
	String channel;
	String url;
	if (random.nextInt(HOT_CHANNELS_RATIO) > 0) {
	int i = random.nextInt(HOT_CHANNELS.length);
	channel = HOT_CHANNELS[i];
	url = HOT_URLS[i];
	} else {
	Tuple2<String, String> channelAndUrl = CHANNEL_URL_CACHE.get(random.nextInt(CHANNELS_NUMBER));
	channel = channelAndUrl.f0;
	url = channelAndUrl.f1;
	}
	bidder += GeneratorConfig.FIRST_PERSON_ID;

I only noticed because I'm writing unit-tests (to better understand what each function intends) while porting the data source to rust and my test failed :P.

Or if there is some reason why the FIRST_PERSON_ID is added twice intentionally, perhaps place those together with a comment - but as it is, I'm assuming it's unintended.