Update README.md

Author: cre8ivepark

README.md

@@ -61,7 +61,7 @@ Find this readme, other documentation articles and the MRTK api reference on our
 | Various object positioning behaviors such as tag-along, body-lock, constant view size and surface magnetism | Script for lay out an array of objects in a three-dimensional shape | Annotation UI with flexible anchor/pivot system which can be used for labeling motion controllers and object. |
 |  [![App Bar](External/ReadMeImages/AppBar/MRTK_AppBar_Main.png)](Documentation/README_AppBar.md) [App Bar](Documentation/README_AppBar.md) | [![Pointers](External/ReadMeImages/Pointers/MRTK_Pointer_Main.png)](Documentation/README_Pointers.md) [Pointers](Documentation/README_Pointers.md) | [![Fingertip Visualization](External/ReadMeImages/Fingertip/MRTK_FingertipVisualization_Main.png)](Documentation/README_FingertipVisualization.md) [Fingertip Visualization](Documentation/README_FingertipVisualization.md) |
 | UI for Bounding Box's manual activation | Learn about various types of pointers | Visual affordance on the fingertip which improves the confidence for the direct interaction |
-|  [![Eye Tracking: Target Selection](External/ReadMeImages/EyeTracking/mrtk_et_targetselect.png)](Documentation/EyeTracking/EyeTracking_TargetSelection.md) [Eye Tracking: Target Selection](Documentation/EyeTracking/EyeTracking_TargetSelection.md) | [![Eye Tracking: Navigation](External/ReadMeImages/EyeTracking/mrtk_et_navigation.png)](Documentation/EyeTracking/EyeTracking_Navigation.md) [Eye Tracking: Navigation](Documentation/EyeTracking/EyeTracking_Navigation.md) | [![Eye Tracking: Heat Map](External/ReadMeImages/EyeTracking/mrtk_et_heatmaps.png)](Documentation/EyeTracking/EyeTracking_Navigation.md) [Eye Tracking: Heat Map](Documentation/EyeTracking/EyeTracking_Visualization.md) |
+|  [![Eye Tracking: Target Selection](External/ReadMeImages/EyeTracking/mrtk_et_targetselect.png)](Documentation/EyeTracking/EyeTracking_TargetSelection.md) [Eye Tracking: Target Selection](Documentation/EyeTracking/EyeTracking_TargetSelection.md) | [![Eye Tracking: Navigation](External/ReadMeImages/EyeTracking/mrtk_et_navigation.png)](Documentation/EyeTracking/EyeTracking_Navigation.md) [Eye Tracking: Navigation](Documentation/EyeTracking/EyeTracking_Navigation.md) | [![Eye Tracking: Heat Map](External/ReadMeImages/EyeTracking/mrtk_et_heatmaps.png)](Documentation/EyeTracking/EyeTracking_Visualization.md) [Eye Tracking: Heat Map](Documentation/EyeTracking/EyeTracking_Visualization.md) |
 | Use eyes, voice and hand input in combination for quickly selecting holograms across your scene. | Learn how to auto scroll text or fluently zoom into focused content based on what you are looking at.| Examples for logging, loading and visualizing what users have been looking at in your app. |
 
 # Example Scene