Update online_weight_quorum toml comment (nanocurrency#3122)

nano/node/nodeconfig.cpp

@@ -76,7 +76,7 @@ nano::error nano::node_config::serialize_toml (nano::tomlconfig & toml) const
 	toml.put ("peering_port", peering_port, "Node peering port.\ntype:uint16");
 	toml.put ("bootstrap_fraction_numerator", bootstrap_fraction_numerator, "Change bootstrap threshold (online stake / 256 * bootstrap_fraction_numerator).\ntype:uint32");
 	toml.put ("receive_minimum", receive_minimum.to_string_dec (), "Minimum receive amount. Only affects node wallets. A large amount is recommended to avoid automatic work generation for tiny transactions.\ntype:string,amount,raw");
-	toml.put ("online_weight_minimum", online_weight_minimum.to_string_dec (), "Online weight minimum required to confirm a block.\ntype:string,amount,raw");
+	toml.put ("online_weight_minimum", online_weight_minimum.to_string_dec (), "When calculating online weight, the node is forced to assume at least this much voting weight is online, thus setting a floor for voting weight to confirm transactions at online_weight_minimum * \"quorum delta\".\ntype:string,amount,raw");
 	toml.put ("election_hint_weight_percent", election_hint_weight_percent, "Percentage of online weight to hint at starting an election. Defaults to 10.\ntype:uint32,[5,50]");
 	toml.put ("password_fanout", password_fanout, "Password fanout factor.\ntype:uint64");
 	toml.put ("io_threads", io_threads, "Number of threads dedicated to I/O operations. Defaults to the number of CPU threads, and at least 4.\ntype:uint64");