[macos] - add Styles header to CHANGELOG.md

platform/macos/CHANGELOG.md

@@ -3,6 +3,7 @@
 ## master
 
 ### Styles
+
 * Added support for displaying geo-referenced images via the `MGLImageSource`.  [#9110](https://github.com/mapbox/mapbox-gl-native/pull/9110)
 * The previously-deprecated support for style classes has been removed. For interface compatibility, the API methods remain, but they are now non-functional.
 * Added an `overlays` property to `MGLMapView`. ([#8617](https://github.com/mapbox/mapbox-gl-native/pull/8617))
@@ -16,6 +17,8 @@ This version of the Mapbox macOS SDK corresponds to version 3.6.0 of the Mapbox
 * Xcode 8.0 or higher is now recommended for using this SDK. ([#8775](https://github.com/mapbox/mapbox-gl-native/pull/8775))
 * Updated MGLMapView’s logo view to display [the new Mapbox logo](https://www.mapbox.com/blog/new-mapbox-logo/). ([#8771](https://github.com/mapbox/mapbox-gl-native/pull/8771), [#8773](https://github.com/mapbox/mapbox-gl-native/pull/8773))
 
+### Styles
+
 * Added support for 3D extrusion of buildings and other polygonal features via the `MGLFillExtrusionStyleLayer` class and the `fill-extrusion` layer type in style JSON. ([#8431](https://github.com/mapbox/mapbox-gl-native/pull/8431))
 * MGLMapView and MGLTilePyramidOfflineRegion now default to version 10 of the Mapbox Streets style. Similarly, several style URL class methods of MGLStyle return URLs to version 10 styles. Unversioned variations of these methods are no longer deprecated. `MGLStyleDefaultVersion` should no longer be used with any style other than Streets. ([#6301](https://github.com/mapbox/mapbox-gl-native/pull/6301))
 * Added class methods to MGLStyle that correspond to the new [Traffic Day and Traffic Night](https://www.mapbox.com/blog/live-traffic-maps/) styles. ([#6301](https://github.com/mapbox/mapbox-gl-native/pull/6301))