Update wording

Author: lilleyse

CHANGES.md

@@ -4,7 +4,7 @@ Change Log
 ### 1.47 - 2018-07-02
 
 ##### Breaking Changes :mega:
-* glTF 2.0 models corrected to face +Z forwards per specification.  Internally Cesium uses +X as forward, so a new +Z to +X rotation was added for 2.0 models only. To fix models that are oriented incorrectly after this change, apply a +X to +Z rotation `[0,0,1,0,0,1,0,0,-1,0,0,0,0,0,0,1]` to the root node of the glTF. [#6632](https://github.com/AnalyticalGraphicsInc/cesium/pull/6632)
+* glTF 2.0 models corrected to face +Z forwards per specification.  Internally Cesium uses +X as forward, so a new +Z to +X rotation was added for 2.0 models only. To fix models that are oriented incorrectly after this change, apply a +X to +Z rotation in the glTF file. The can be done by setting the `matrix` of the root node to `[0,0,1,0,0,1,0,0,-1,0,0,0,0,0,0,1]`. [#6632](https://github.com/AnalyticalGraphicsInc/cesium/pull/6632)
 * Dropped support for directory URLs when loading tilesets to match the updated [3D Tiles spec](https://github.com/AnalyticalGraphicsInc/3d-tiles/issues/272). [#6502](https://github.com/AnalyticalGraphicsInc/cesium/issues/6502)
 * KML and GeoJSON now use `PolylineGraphics` instead of `CorridorGraphics` for polylines on terrain. [#6706](https://github.com/AnalyticalGraphicsInc/cesium/pull/6706)