Updated Hardware API (markdown)

Hardware-API.md

@@ -374,7 +374,7 @@ Constants:
 - `machine.sleep([... options])` NOHEAP; enter sleep mode that retains RAM and continues execution when woken
 - `machine.deepsleep([... options])` NOHEAP; enter sleep mode that may not retain RAM and may reset when woken
 - `machine.reset_cause()` get the reset cause
-- `machine.wake_reason()` get the wake reason (from `SLEEP` or `DEEPSLEEP` modes), will return `None` if no sleep-wake cycle has occurred
+- `machine.wake_reason()` get the wake reason (from `SLEEP` or `DEEPSLEEP` modes). `None` will be returned if no sleep-wake cycle has occurred
 
 ### Constants