aead

digest: remove lingering `docsrs` attrs (#1460) #2186

Job	Run time
test (1.65.0)	1m 49s
build (1.65.0, thumbv7em-none-eabi)	1m 48s
test (stable)	18s
build (1.65.0, wasm32-unknown-unknown)	1m 50s
build (stable, thumbv7em-none-eabi)	26s
build (stable, wasm32-unknown-unknown)	20s
	6m 31s

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