Switch docs for setShared and isShared

The descriptions for these two methods appear to have been switched. This change switches them back to how they probably should be.

Author: JosephCarrington

lib/src/location.dart

@@ -10,13 +10,13 @@ class OneSignalLocation {
     return await _channel.invokeMethod("OneSignal#requestPermission");
   }
 
-  /// Allows you to determine if the user's location data is shared with OneSignal.
-  /// This allows you to do things like geofenced notifications, etc.
+  /// Set whether location is currently shared with OneSignal.
   Future<void> setShared(bool shared) async {
     return await _channel.invokeMethod("OneSignal#setShared", shared);
   }
 
-  /// Set whether location is currently shared with OneSignal.
+  /// Allows you to determine if the user's location data is shared with OneSignal.
+  /// This allows you to do things like geofenced notifications, etc.
   Future<bool> isShared() async {
     return await _channel.invokeMethod("OneSignal#isShared");
   }