Update help text in test net tutorial
Update help text in test net tutorial

Signed-off-by: NIKHIL E GUPTA <cc4fec8a34766005dd45d48be045c08d736c11ed@symbridge.com>

manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,stemlending/fabric,manish-sethi/fabric-sidedb,stemlending/fabric,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,manish-sethi/fabric-sidedb,jimthematrix/fabric,stemlending/fabric,stemlending/fabric,hyperledger/fabric,hyperledger/fabric,manish-sethi/fabric,manish-sethi/fabric,manish-sethi/fabric-sidedb,jimthematrix/fabric