Update README.md

Author: giovannivolpe

README.md

@@ -223,15 +223,15 @@ Specific examples for graph-neural-network-based particle linking and trace char
 
 - DTAT385 **[deeptrack.statistics](https://github.com/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT385_statistics.ipynb)** <a href="https://colab.research.google.com/github/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT385_statistics.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>
 
-- DTAT387 **[deeptrack.types]**
+- DTAT387 **[deeptrack.types](https://github.com/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT_387_types.ipynb)** <a href="https://colab.research.google.com/github/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT_387_types.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>
 
-- DTAT389 **[deeptrack.elementwise]**
+- DTAT389 **[deeptrack.elementwise](https://github.com/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT389_elementwise.ipynb)** <a href="https://colab.research.google.com/github/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT389_elementwise.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>
 
-- DTAT391A **[deeptrack.sources.base]**
+- DTAT391A **[deeptrack.sources.base](https://github.com/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT391A_sources.base.ipynb)** <a href="https://colab.research.google.com/github/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT391A_sources.base.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>
 
 - DTAT391B **[deeptrack.sources.folder]**
 
-- DTAT391C **[deeptrack.sources.rng]**
+- DTAT391C **[deeptrack.sources.rng](https://github.com/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT391C_sources.rng.ipynb)** <a href="https://colab.research.google.com/github/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT391C_sources.rng.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>
 
 - DTAT393A **[deeptrack.pytorch.data]**
 
@@ -243,7 +243,7 @@ Specific examples for graph-neural-network-based particle linking and trace char
 
 - DTAT399B **[deeptrack.backend.pint_definition]**
 
-- DTAT399C **[deeptrack.backend.units]**
+- DTAT399C **[deeptrack.backend.units](https://github.com/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT399C_backend.units.ipynb)** <a href="https://colab.research.google.com/github/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT399C_backend.units.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>
 
 - DTAT399D **[deeptrack.backend.polynomials](https://github.com/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT399D_polynomials.ipynb)** <a href="https://colab.research.google.com/github/DeepTrackAI/DeepTrack2/blob/develop/tutorials/3-advanced-topics/DTAT399D_polynomials.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>