Update wording

packages/camera/camera_platform_interface/lib/src/platform_interface/camera_platform.dart

@@ -222,7 +222,7 @@ abstract class CameraPlatform extends PlatformInterface {
   /// Gets the supported step size for exposure offset for the selected camera in EV units.
   ///
   /// Returns 0 when the camera supports using a free value without stepping, and
-  /// returns -1 when exposure compensation is not supported for the device.
+  /// returns -1 when exposure compensation is not supported.
   Future<double> getExposureOffsetStepSize(int cameraId) {
     throw UnimplementedError('getMinExposureOffset() is not implemented.');
   }