Use `doc_auto_cfg` (#514) #567

Job	Run time
clippy	45s
rustfmt	9s
check	49s
test (ubuntu-latest, stable, sudo apt-get install libpcsclite-dev)	1m 20s
test (windows-latest, stable, true)	4m 44s
test (macos-latest, stable, true)	2m 41s
test (ubuntu-latest, 1.65.0, sudo apt-get install libpcsclite-dev)	3m 42s
test (windows-latest, 1.65.0, true)	3m 34s
test (macos-latest, 1.65.0, true)	3m 51s
	21m 35s

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