Edit README.md

Edit file for consistent spelling and active voice.

Author: Amanda Butler

APIs_Drivers/lowpowerTimeout_ex_1/README.md

@@ -1,4 +1,4 @@
-# LowpowerTimout example
+# LowPowerTimeout example
 
-This example shows how to use a LowpowerTimout to schedule delayed events. The LowPowerTimeout API is a countdown timer that triggers a callback function when the timer runs out. The LowPowerTimeout interface can be though of as a one shot LowPowerTicker.
+This example shows how to use LowPowerTimeout to schedule delayed events. The LowPowerTimeout API is a countdown timer that triggers a callback function when the timer runs out. You can think of the LowPowerTimeout interface as a one-time LowPowerTicker.