docs: fix syntax of example in auto-tls module #3936

Job	Run time
Build	2m 44s
Test example js-libp2p-example-browser-pubsub	1m 46s
Test example js-libp2p-example-chat	1m 5s
Test example js-libp2p-example-circuit-relay	1m 32s
Test example js-libp2p-example-connection-encryption	1m 10s
Test example js-libp2p-example-custom-protocols	2m 7s
Test example js-libp2p-example-delegated-routing	1m 56s
Test example js-libp2p-example-discovery-mechanisms	2m 18s
Test example js-libp2p-example-peer-and-content-routing	1m 36s
Test example js-libp2p-example-pnet	1m 1s
Test example js-libp2p-example-protocol-and-stream-muxing	1m 3s
Test example js-libp2p-example-pubsub	1m 11s
Test example js-libp2p-example-transports	1m 4s
Test example js-libp2p-example-webrtc-private-to-private	2m 17s
	22m 50s

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