Various docs improvements #1680

Job	Run time
cargo check (msrv) (wasm32)	41s
cargo check (aarch64-android)	26s
cargo check (msrv) (windows-latest)	1m 48s
cargo check (msrv) (macos-latest)	42s
cargo clippy (windows-latest)	2m 55s
cargo check (msrv) (ubuntu-latest)	44s
cargo clippy (wasm32)	1m 24s
cargo clippy (macos-latest)	1m 2s
cargo doc	1m 1s
cargo clippy (ubuntu-latest)	1m 29s
Prime LFS Cache	8s
cargo fmt	24s
cargo test (wasm32)	34s
typos	5s
cargo test (windows-latest)	2m 5s
cargo test (macos-latest)	1m 15s
cargo test (ubuntu-latest)	2m 39s
	19m 22s

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