pls change comment "...finalise..." to "...finalize...", with Z, to match actual method, also in the kotlin version

[DavidCervigni]

https://github.com/corda/CSDE-cordapp-template-java/blob/a7592dde96bf9506ab92f2c0e8f184a472cf65ba/workflows/src/main/java/com/r3/developers/csdetemplate/utxoexample/workflows/FinalizeChatResponderFlow.java#LL50C85-L50C93