Improvements to docs #316

Job	Run time
cargo clippy (windows-latest)	1m 49s
cargo clippy (android) (armv7-linux-androideabi)	43s
cargo clippy (macos-latest)	50s
cargo check (msrv) (android) (armv7-linux-androideabi)	21s
cargo check (msrv) (windows-latest)	1m 7s
cargo clippy (ubuntu-latest)	56s
cargo clippy (android) (aarch64-linux-android)	1m 23s
cargo check (msrv) (android) (aarch64-linux-android)	39s
cargo check (msrv) (macos-latest)	29s
cargo check (msrv) (android) (x86_64-linux-android)	34s
cargo check (msrv) (ubuntu-latest)	22s
cargo doc (windows-latest)	1m 22s
cargo clippy (android) (x86_64-linux-android)	1m 11s
cargo doc (macos-latest)	31s
cargo fmt	22s
cargo doc (ubuntu-latest)	26s
cargo test (windows-latest)	1m 12s
typos	6s
cargo test (macos-latest)	36s
cargo test (ubuntu-latest)	23s
	15m 22s

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