docs: fix param type in example comment (#784) #2109

Job	Run time
clippy	1m 13s
docs	54s
check no_std	54s
fmt	13s
miri --no-default-features	4m 52s
features stable	2m 8s
miri	4m 50s
test ubuntu-latest stable --no-default-features	1m 16s
features stable --all-targets	3m 17s
miri --all-features	7m 0s
test ubuntu-latest stable	1m 21s
wasm	42s
features nightly	2m 26s
test ubuntu-latest nightly --no-default-features	1m 17s
features nightly --all-targets	3m 29s
test ubuntu-latest nightly	1m 22s
test ubuntu-latest 1.81 --no-default-features	45s
test ubuntu-latest 1.81	44s
test windows-latest stable --no-default-features	3m 45s
test windows-latest stable	3m 45s
test windows-latest nightly --no-default-features	2m 34s
test windows-latest nightly	2m 35s
test windows-latest 1.81 --no-default-features	1m 43s
test windows-latest 1.81	1m 46s
test ubuntu-latest 1.81 --features json	48s
test windows-latest 1.81 --features json	1m 49s
test ubuntu-latest nightly --all-features	1m 27s
test windows-latest nightly --all-features	2m 57s
	1h 1m 52s

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