Update what's new.md

dist/preview release/what's new.md

@@ -155,6 +155,7 @@
 - Fixed issue where VRExperienceHelper.onExitingVR observable was being fired twice ([atulyar](https://github.com/atulyar))
 - GizmoManager should hide existing gizmos if a non-attachable mesh is selected ([TrevorDev](https://github.com/TrevorDev))
 - Ignore isPickable = false for vr ray casting if the mesh's name matches the specified floorMeshName to maintain backwards compatability ([TrevorDev](https://github.com/TrevorDev))
+- Fix File Loading if hosted from `file:`-Protocol ([ltetzlaff](https://github.com/ltetzlaff))
 
 ### Core Engine