changed experimental folder name in doc navigation

Author: bethalha-havok

Documentation/toc.yml

@@ -218,7 +218,7 @@
       href: README_HandInteractionExamples.md
     - name: Eye Tracking Interaction Example
       href: EyeTracking/EyeTracking_ExamplesOverview.md
-  - name: Experimental Features
+  - name: Experimental
     items:
     - name: Scrolling Object Collection
       href: ../Assets/MixedRealityToolkit.SDK/Experimental/ScrollingObjectCollection/README.md