Improvements to docs #312

Job	Run time
cargo clippy (android) (armv7-linux-androideabi)	44s
cargo clippy (android) (aarch64-linux-android)	42s
cargo check (msrv) (android) (armv7-linux-androideabi)	54s
cargo clippy (windows-latest)	40s
cargo clippy (android) (x86_64-linux-android)	38s
cargo check (msrv) (android) (aarch64-linux-android)	53s
cargo clippy (macos-latest)	47s
cargo check (msrv) (windows-latest)	2m 36s
cargo check (msrv) (android) (x86_64-linux-android)	52s
cargo clippy (ubuntu-latest)	33s
cargo check (msrv) (macos-latest)	1m 32s
cargo doc (windows-latest)	3m 43s
cargo check (msrv) (ubuntu-latest)	57s
cargo doc (macos-latest)	1m 10s
cargo fmt	23s
cargo doc (ubuntu-latest)	1m 8s
typos	7s
cargo test (windows-latest)	3m 31s
cargo test (macos-latest)	1m 39s
cargo test (ubuntu-latest)	1m 51s
	25m 20s

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