message: MINOR: fix feature example's camera and feature.
diff: @@ -29,10 +29,11 @@ export namespace SimpleFeaturesExample {
  // end:harp_simple_features_example_0.ts
  // snippet:harp_simple_features_example_1.ts
  - const square = new MapViewPolygonFeature([[[10, 50], [15, 30], [5, 30]]]);
  + // We need to replicate the first point in the last coordinate to close the polygon.
  + const polygon = new MapViewPolygonFeature([[[10, 50], [10, 30], [5, 30], [5, 50], [10, 50]]]);
  const featuresDataSource = new FeaturesDataSource();
  map.addDataSource(featuresDataSource).then(() => {
  - featuresDataSource.add(square).setStyleSet([
  + featuresDataSource.add(polygon).setStyleSet([
  {
  technique: "fill",
  when: "$geometryType == 'polygon'",
  @@ -53,7 +54,7 @@ export namespace SimpleFeaturesExample {
  canvas,
  theme: "resources/berlin_tilezen_base.json"
  });
  - mapView.setCameraGeolocationAndZoom(new GeoCoordinates(-25, 13), 3.9);
  + mapView.setCameraGeolocationAndZoom(new GeoCoordinates(25, 13), 3.9);
  const controls = new MapControls(mapView);
  const ui = new MapControlsUI(controls);
  