docs: update from sources installation method to use cargo install #94

Job	Run time
check (linux, amd64, x86_64-unknown-linux-gnu)	16s
check (linux, arm64, aarch64-unknown-linux-gnu)	18s
check (darwin, amd64, x86_64-apple-darwin)	17s
check (darwin, arm64, aarch64-apple-darwin)	17s
check (windows, amd64, x86_64-pc-windows-msvc)	22s
check (windows, arm64, aarch64-pc-windows-msvc)	20s
clippy	22s
Build and save artifact (linux, amd64, x86_64-unknown-linux-gnu, ubuntu-latest)	1m 42s
Build and save artifact (linux, arm64, aarch64-unknown-linux-gnu, ubuntu-latest)	2m 2s
Build and save artifact (darwin, amd64, x86_64-apple-darwin, macos-latest)	1m 27s
Build and save artifact (darwin, arm64, aarch64-apple-darwin, macos-latest)	2m 33s
Build and save artifact (windows, amd64, x86_64-pc-windows-msvc, windows-latest)	1m 55s
Build and save artifact (windows, arm64, aarch64-pc-windows-msvc, windows-latest)	1m 50s
	13m 41s

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