Update get-started-vscode.md (#21072)

http to https after verifying link

Author: icyfire0573

docs/fsharp/get-started/get-started-vscode.md

@@ -5,7 +5,7 @@ ms.date: 12/23/2018
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 # Get Started with F# in Visual Studio Code
 
-You can write F# in [Visual Studio Code](https://code.visualstudio.com) with the [Ionide plugin](https://marketplace.visualstudio.com/items?itemName=Ionide.Ionide-fsharp) to get a great cross-platform, lightweight Integrated Development Environment (IDE) experience with IntelliSense and code refactorings. Visit [Ionide.io](http://ionide.io) to learn more about the plugin.
+You can write F# in [Visual Studio Code](https://code.visualstudio.com) with the [Ionide plugin](https://marketplace.visualstudio.com/items?itemName=Ionide.Ionide-fsharp) to get a great cross-platform, lightweight Integrated Development Environment (IDE) experience with IntelliSense and code refactorings. Visit [Ionide.io](https://ionide.io) to learn more about the plugin.
 
 To begin, ensure that you have [F# and the Ionide plugin correctly installed](install-fsharp.md#install-f-with-visual-studio-code).