doc fixes

Author: dhalbert

shared-bindings/alarm/SleepMemory.c

@@ -47,10 +47,10 @@
 //|        import alarm
 //|        alarm.sleep_memory[0] = True
 //|        alarm.sleep_memory[1] = 12
-//|
+//|     """
 
 //|     def __init__(self) -> None:
-//|         """Not currently dynamically supported. Access the sole instance through `microcontroller.nvm`."""
+//|         """Not used. Access the sole instance through `alarm.sleep_memory`."""
 //|         ...
 //|
 

shared-bindings/alarm/__init__.c

@@ -58,7 +58,11 @@
 //| maintaining the connection takes priority and power consumption may not be reduced.
 //| """
 
+//| sleep_memory: SleepMemory
+//| """Memory that persists during deep sleep.
+//| This object is the sole instance of `alarm.SleepMemory`."""
 //|
+
 //| wake_alarm: Alarm
 //| """The most recently triggered alarm. If CircuitPython was sleeping, the alarm the woke it from sleep."""
 //|