rpc: Add missing gettxoutsetinfo help docs

Author: fjahr

src/rpc/blockchain.cpp

@@ -1117,13 +1117,13 @@ static RPCHelpMan gettxoutsetinfo()
                         {RPCResult::Type::STR_AMOUNT, "total_unspendable_amount", "The total amount of coins permanently excluded from the UTXO set (only available if coinstatsindex is used)"},
                         {RPCResult::Type::OBJ, "block_info", "Info on amounts in the block at this block height (only available if coinstatsindex is used)",
                         {
-                            {RPCResult::Type::STR_AMOUNT, "prevout_spent", ""},
-                            {RPCResult::Type::STR_AMOUNT, "coinbase", ""},
-                            {RPCResult::Type::STR_AMOUNT, "new_outputs_ex_coinbase", ""},
-                            {RPCResult::Type::STR_AMOUNT, "unspendable", ""},
+                            {RPCResult::Type::STR_AMOUNT, "prevout_spent", "Total amount of all prevouts spent in this block"},
+                            {RPCResult::Type::STR_AMOUNT, "coinbase", "Coinbase subsidy amount of this block"},
+                            {RPCResult::Type::STR_AMOUNT, "new_outputs_ex_coinbase", "Total amount of new outputs created by this block"},
+                            {RPCResult::Type::STR_AMOUNT, "unspendable", "Total amount of unspendable outputs created in this block"},
                             {RPCResult::Type::OBJ, "unspendables", "Detailed view of the unspendable categories",
                             {
-                                {RPCResult::Type::STR_AMOUNT, "genesis_block", ""},
+                                {RPCResult::Type::STR_AMOUNT, "genesis_block", "The unspendable amount of the Genesis block subsidy"},
                                 {RPCResult::Type::STR_AMOUNT, "bip30", "Transactions overridden by duplicates (no longer possible with BIP30)"},
                                 {RPCResult::Type::STR_AMOUNT, "scripts", "Amounts sent to scripts that are unspendable (for example OP_RETURN outputs)"},
                                 {RPCResult::Type::STR_AMOUNT, "unclaimed_rewards", "Fee rewards that miners did not claim in their coinbase transaction"},