docs: hide hex_literal export #2262

Job	Run time
docs	30s
clippy	43s
check no_std	32s
features stable	1m 27s
features stable --all-targets	2m 45s
fmt	10s
miri --no-default-features	4m 51s
features nightly	1m 39s
miri	4m 53s
features nightly --all-targets	2m 46s
test ubuntu-latest stable --no-default-features	52s
wasm	34s
test ubuntu-latest stable	51s
test ubuntu-latest nightly --no-default-features	47s
miri --all-features	7m 23s
test ubuntu-latest nightly	50s
test ubuntu-latest 1.81 --no-default-features	31s
test ubuntu-latest 1.81	33s
test windows-latest stable --no-default-features	2m 1s
test windows-latest stable	4m 3s
test windows-latest nightly --no-default-features	2m 24s
test windows-latest nightly	2m 18s
test windows-latest 1.81 --no-default-features	1m 30s
test windows-latest 1.81	1m 10s
test ubuntu-latest 1.81 --features json	29s
test windows-latest 1.81 --features json	1m 49s
test ubuntu-latest nightly --all-features	1m 9s
test windows-latest nightly --all-features	2m 27s
deny / cargo deny check	14s
ci success	2s
	52m 13s

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