Update what's new.md

dist/preview release/what's new.md

@@ -50,6 +50,7 @@
 - Added support for inspectable strings ([Deltakosh](https://github.com/deltakosh/))
 
 ### Tools
+- Added `Tools.CreateScreenshotAsync` and `Tools.CreateScreenshotUsingRenderTargetAsync` ([mehmetoguzderin](https://github.com/mehmetoguzderin/))
 - Added `Color3.toHSV()`, `Color3.toHSVToRef()` and `Color3.HSVtoRGBToRef()` ([Deltakosh](https://github.com/deltakosh/))
 - Added `ShadowGenerator.onAfterShadowMapRenderObservable` and `ShadowGenerator.onAfterShadowMapMeshRenderObservable` ([Deltakosh](https://github.com/deltakosh/))
 - Added support for side by side and top bottom images in the `PhotoDome` ([Deltakosh](https://github.com/deltakosh/))