rust

docs: some minor docs cleanup #5489

Job	Run time
proteus-test	1m 18s
check (fmt, --all -- --check)	12s
check (clippy, -- -D warnings)	2m 7s
check (clippy, -- -D warnings, --target wasm32-unknown-unknown)	1m 17s
test	2m 7s
check (check, --tests)	2m 7s
check (check, --tests, --target wasm32-unknown-unknown)	1m 30s
test-keystore-regressions	2m 6s
hack	1m 11s
proteus-wasm-test	1m 22s
wasm-core-test	2m 4s
wasm-test (keystore)	1m 3s
wasm-test (mls-provider)	1m 2s
	19m 26s

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