remove (Visual Studio 2017 only) from R

Author: ghogen

docs/index.yml

@@ -112,7 +112,7 @@ tools:
     - title: TypeScript
       imageSrc: https://docs.microsoft.com/media/logos/logo_TS.svg
       url: http://www.typescriptlang.org/docs/tutorial.html
-    - title: R (Visual Studio 2017 only)
+    - title: R
       imageSrc: https://docs.microsoft.com/media/logos/logo_R.svg
       url: /visualstudio/rtvs/?view=vs-2017