Co-authored-by: Josh Triplett <josh@joshtriplett.org>
///
/// In Unix terms the return value is the **exit status**: the value passed to `exit`, if the
/// process finished by calling `exit`. Note that on Unix the exit status is truncated to 8
- /// bits, and that values that didn't come from a program's call to `exit` may be invented the
+ /// bits, and that values that didn't come from a program's call to `exit` may be invented by the
/// runtime system (often, for example, 255, 254, 127 or 126).
///
/// On Unix, this will return `None` if the process was terminated by a signal. If you want to