Remove incorrect comment in example #2684

Job	Run time
Check Style	13s
semver	21s
Verify hyper.h is up to date	30s
features	38s
Test stable on ubuntu-latest	1m 23s
Test stable on windows-latest	2m 0s
Test stable on macOS-latest	1m 8s
Test beta on ubuntu-latest	1m 15s
Test C API (FFI)	23s
Test with Miri	1m 47s
Test beta on windows-latest	2m 20s
minimal-versions	29s
Test beta on macOS-latest	1m 10s
Check MSRV	16s
Test nightly on ubuntu-latest	1m 15s
udeps	20s
Test nightly on windows-latest	2m 17s
Test nightly on macOS-latest	1m 12s
Build docs	15s
Check exposed types	19s
CI is green	1s
	19m 32s

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