Rust provides a mechanism for spawning native OS threads via the `scoped`
function, the argument of this function is a moving closure.

{threads.play}

These threads will be scheduled by the OS.

Rust provides a mechanism for spawning native OS threads via the `spawn`
function, the argument of this function is a moving closure.

{threads.play}

These threads will be scheduled by the OS.

Update text to spawn so it matches example
Update text to spawn so it matches example