Update write_first_app tutorial (#5336) #4387

Job	Run time
Basic Checks	3m 26s
Unit Tests	8m 3s
Integration Tests (pvtdata)	16m 42s
Integration Tests (ledger)	18m 17s
Integration Tests (raft)	14m 56s
Integration Tests (pvtdatapurge)	5m 58s
Integration Tests (e2e)	10m 26s
Integration Tests (lifecycle)	14m 33s
Integration Tests (gateway idemix pkcs11 configtx configtxlator)	8m 55s
Integration Tests (sbe nwo msp)	12m 8s
Integration Tests (discovery gossip devmode pluggable)	11m 58s
	2h 5m 22s

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