Update CHANGES.md

Author: Hannah

CHANGES.md

@@ -10,6 +10,7 @@
 
 - Fixed error with `WallGeoemtry` when there were adjacent positions with very close values [#8952](https://github.com/CesiumGS/cesium/pull/8952)
 - Fixed a bug where certain rhumb arc polylines would lead to a crash. [#8787](https://github.com/CesiumGS/cesium/pull/8787)
+- Fixed handling of Label's backgroundColor and backgroundPadding option [#8949](https://github.com/CesiumGS/cesium/8949)
 
 ### 1.70.1 - 2020-06-10
 
@@ -30,7 +31,6 @@
 - Fixed JSDoc and TypeScript type definitions for `Viewer` options parameters.
 - Fixed a memory leak where some 3D Tiles requests were being unintentionally retained after the requests were cancelled. [#8843](https://github.com/CesiumGS/cesium/pull/8843)
 - Fixed a bug with handling of PixelFormat's flipY. [#8893](https://github.com/CesiumGS/cesium/pull/8893)
-- Fixed handling of Label's backgroundColor and backgroundPadding option [#8949](https://github.com/CesiumGS/cesium/8949)
 
 ### 1.70.0 - 2020-06-01