build

README: announce our docs website to the world + instructions to contribute #6782

Job	Run time
build (ubuntu-latest)	7m 26s
build (macos-13)	9m 47s
build (windows-latest)	10m 0s
build (ubuntu-latest, --all-features)	7m 54s
cargo-deny (advisories)	34s
cargo-deny (bans licenses sources)	31s
Check protos	54s
Clippy check	2m 42s
Check that MkDocs can build the docs	25s
Check formatting	19s
	40m 32s

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