Update what's new.md

dist/preview release/what's new.md

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 # 2.5.0:
 
 ### Major updates
-- New `StandardRenderingPipeline` effect to support screen space lens flare and depth of field. []Demo](http://www.babylonjs.com/Demos/StandardRenderingPipeline/) - ([Julien Moreau-Mathis](https://github.com/julien-moreau))
+- New `StandardRenderingPipeline` effect to support screen space lens flare and depth of field. [Demo](http://www.babylonjs.com/Demos/StandardRenderingPipeline/) - ([Julien Moreau-Mathis](https://github.com/julien-moreau))
 - New `HighlightLayer` object to enable highlights rendering. [Demo](http://www.babylonjs.com/Demos/Highlights/) - ([sebavan](https://github.com/sebavan))
 - Babylon.js now supports right handed system with ```scene.useRightHandedSystem = true``` ([deltakosh](https://github.com/deltakosh))
 - Babylon.js is now compiled with [optimize-js](https://github.com/nolanlawson/optimize-js) to get faster initial load ([deltakosh](https://github.com/deltakosh))