test

Add rustdoc to connect crate #2247

Job	Run time
cargo fmt	12s
cargo +stable clippy (ubuntu-latest)	8m 3s
cargo +1.81 check (ubuntu-latest)	8m 19s
cargo +1.81 check (windows-latest)	6m 48s
cross +1.81 build armv7-unknown-linux-gnueabihf	4m 21s
cargo +stable check (ubuntu-latest)	4m 47s
cargo +stable check (windows-latest)	7m 2s
cross +stable build armv7-unknown-linux-gnueabihf	2m 7s
cargo +beta check (ubuntu-latest)	8m 35s
cross +1.81 build aarch64-unknown-linux-gnu	2m 12s
cross +stable build aarch64-unknown-linux-gnu	3m 43s
cross +1.81 build riscv64gc-unknown-linux-gnu	2m 8s
cross +stable build riscv64gc-unknown-linux-gnu	2m 15s
	1h 0m 32s

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