updated example DTE231A LodeSTAR autotracker (#441)

* Updated tutorial and added data in assets

* Update README.md

* added text

Author: Pwhsky

README.md

@@ -148,7 +148,7 @@ These are examples of how DeepTrack2 can be used on real datasets:
 
 Specific examples for label-free particle tracking using **LodeSTAR**:
 
-- DTEx231A **LodeSTAR Autotracker Template**
+- DTEx231A **[LodeSTAR autotracker template](https://github.com/DeepTrackAI/DeepTrack2/blob/develop/tutorials/2-examples/DTEx231A_LodeSTAR_autotracker_template.ipynb)** <a href="https://colab.research.google.com/github/DeepTrackAI/DeepTrack2/blob/develop/tutorials/2-examples/DTEx231A_LodeSTAR_autotracker_template.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg"></a>
 
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