AdvancedChatServer remove wrong comments in sketch description #1195

Job	Run time
compile-examples (arduino:mbed:nano33ble, nano33ble)	7m 11s
compile-examples (arduino:mbed:envie_m7, envie_m7)	16m 28s
compile-examples (arduino:mbed:envie_m7:target_core=cm4, envie_m7_core_cm4)	4m 22s
compile-examples (arduino:mbed:nanorp2040connect, nanorp2040connect)	12m 39s
compile-examples (arduino:mbed:nicla_sense, nicla_sense)	12m 58s
compile-examples (arduino:mbed:nicla_vision, nicla_vision)	11m 25s
compile-examples (arduino:mbed:opta, opta)	13m 23s
compile-examples (arduino:mbed:giga, giga)	23m 32s
compile-examples (arduino:mbed:nicla_voice, nicla_voice)	5m 6s
compile-examples (arduino:mbed:edge_control, edge_control)	5m 32s
	1h 52m 36s

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