update collateralizedConvert

doc/README.md

@@ -1769,18 +1769,16 @@ hive.broadcast.convert(wif, owner, requestid, amount, function(err, result) {
 ### Collateralized Convert
 
 ```js
-hive.broadcast.collateralizedConvert(wif, owner, collateral_amount, converted_amount, requestid, conversion_date, function(err, result) {
+hive.broadcast.collateralizedConvert(wif, owner, requestid, amount, function(err, result) {
   console.log(err, result);
 });
 ```
 |Parameter|Datatype|Description|
 |---------|--------|-----------|
-|wif|string|Active private key|
+|wif|string|Active private key. "5xx...xxxx"|
 |owner|string|Hive username. "guest123"|
-|collateral_amount|string|Hive to be used as collateral for the conversion. "100.000 HIVE"|
-|converted_amount|string|Amount of HBD to be converted. "10.000 HBD"|
 |requestid|integer|Identifier for the conversion transactions from same account. 1|
-|conversion_date|string|Time at which the conversion should take place. "2020/10/10 10:00"|
+|amount|string|Hive to be used as collateral for the conversion. "100.000 HIVE"|
 |callback|function|function(err, data) {/*code*/}|
 
 ### Curate Reward