Fix formatting in SleepManager.md

Make minor formatting change for proper rendering.

Author: Amanda Butler

docs/reference/api/platform/SleepManager.md

@@ -28,13 +28,13 @@ There are two available sleep modes:
 
 1. Sleep mode
 
-    The system clock to the core stops until a reset or an interrupt occurs. This eliminates dynamic power that the processor, memory systems and buses use. This mode maintains the processor, peripheral and memory state, and the peripherals continue to work and can generate interrupts.
+The system clock to the core stops until a reset or an interrupt occurs. This eliminates dynamic power that the processor, memory systems and buses use. This mode maintains the processor, peripheral and memory state, and the peripherals continue to work and can generate interrupts.
 
-    You can wake up the processor by any internal peripheral interrupt or external pin interrupt.
+You can wake up the processor by any internal peripheral interrupt or external pin interrupt.
 
 2. Deep sleep mode
 
-    This mode is similar to sleep but saves more power and has a longer wakeup time. It saves power by turning off the high-speed clocks. Because of this, you can only enter this mode when peripherals relying on high-speed clocks are not in use. Peripherals that do not rely on high-speed clocks include the lp ticker, RTC and external interrupt on a pin. This mode maintains all state.
+This mode is similar to sleep but saves more power and has a longer wakeup time. It saves power by turning off the high-speed clocks. Because of this, you can only enter this mode when peripherals relying on high-speed clocks are not in use. Peripherals that do not rely on high-speed clocks include the lp ticker, RTC and external interrupt on a pin. This mode maintains all state.
 
 ### Sleep manager