remove doc hidden from some keys #5092

Job	Run time
Build target wasm32-wasi	1m 46s
Check ZFuture build on Linux	27s
Check ZFuture build on macOS	53s
Latest build on ubuntu-latest	1m 54s
Clippy (MSRV)	2m 4s
Check ZFuture build on Windows	1m 7s
Latest build on windows-latest	4m 26s
Bitrot check	1m 59s
Latest build on macOS-latest	4m 12s
Clippy (beta)	12s
Code coverage	17m 46s
Rustfmt	19s
Intra-doc links	2m 24s
protobuf consistency	1m 54s
Test on Linux	9m 7s
Test Orchard on Linux	6m 8s
UUID validity	3s
Test NU6 on Linux	9m 11s
Test on macOS	17m 28s
Test Orchard on macOS	11m 18s
Test on Windows	14m 17s
Test Orchard on Windows	10m 32s
Test NU6 on Windows	13m 44s
	2h 13m 11s

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