Update Getting-Started.md

Author: KSaiSivani

wpf/Chromeless-Window/Getting-Started.md

@@ -2,7 +2,7 @@
 layout: post
 title: Getting Started with WPF Chromeless Window control | Syncfusion
 description: Learn here about getting started with Syncfusion WPF Chromeless Window control, its elements and more details.
-platform: WPF
+platform: wpf
 control: ChromelessWindow
 documentation: ug
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