Update documentation: cargo does not build src/bin/*.rs when toml contains [[bin]]
Update documentation: cargo does not build src/bin/*.rs when toml contains [[bin]]

Signed-off-by: Justin Charette <f8c1ccb28a9031959a9257227ce05d11006e6eca@gmail.com>

tshepang/cargo,achanda/cargo,rustyhorde/cargo,vojtechkral/cargo,nipunn1313/cargo,durka/cargo,achanda/cargo,eminence/cargo,tsurai/cargo,rust-lang/cargo,durka/cargo,durka/cargo,durka/cargo,rustyhorde/cargo,nipunn1313/cargo,nipunn1313/cargo,vojtechkral/cargo,tshepang/cargo,rust-lang/cargo,nipunn1313/cargo,tsurai/cargo,eminence/cargo,vojtechkral/cargo,tsurai/cargo,rust-lang/cargo,tshepang/cargo,eminence/cargo,tsurai/cargo,vojtechkral/cargo,tsurai/cargo,achanda/cargo,rust-lang/cargo,eminence/cargo,achanda/cargo,rustyhorde/cargo,tshepang/cargo,rustyhorde/cargo