Updated and polished Graph GP notebook.

README.md

@@ -86,7 +86,7 @@ The easiest way to get started with GAUCHE is to check out our tutorial notebook
 | [GP Regression on Molecules](https://leojklarner.github.io/gauche/notebooks/gp_regression_on_molecules.html)  |  [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/leojklarner/gauche/blob/main/notebooks/GP%20Regression%20on%20Molecules.ipynb)   |
 | [Bayesian Optimisation Over Molecules](https://leojklarner.github.io/gauche/notebooks/bayesian_optimisation_over_molecules.html)  |  [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/leojklarner/gauche/blob/main/notebooks/Bayesian%20Optimisation%20Over%20Molecules.ipynb)   |
 | [Multioutput Gaussian Processes for Multitask Learning](https://leojklarner.github.io/gauche/notebooks/multitask_gp_regression_on_molecules.html)  |  [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/leojklarner/gauche/blob/main/notebooks/Multitask%20GP%20Regression%20on%20Molecules.ipynb)   |
-| [Using GraKel Graph kernels](https://leojklarner.github.io/gauche/notebooks/external_graph_kernels.html)  |  [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/leojklarner/gauche/blob/main/notebooks/external_graph_kernels.ipynb)   |
+| [Training GPs on Graphs](https://leojklarner.github.io/gauche/notebooks/Training%20GPs%20on%20Graphs.html)  |  [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/leojklarner/gauche/blob/main/notebooks/Training%20GPs%20on%20Graphs.ipynb)   |
 | [Sparse GP Regression for Big Molecular Data](https://leojklarner.github.io/gauche/notebooks/sparse_gp_regression_for_big_molecular_data.html)  |  [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/leojklarner/gauche/blob/main/notebooks/Sparse%20GP%20Regression%20for%20Big%20Molecular%20Data.ipynb)   |
 |[Molecular Preference Learning](https://github.com/leojklarner/gauche/blob/main/notebooks/Molecular%20Preference%20Learning.ipynb)|[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/leojklarner/gauche/blob/main/notebooks/Molecular%20Preference%20Learning.ipynb) |
 |[Preferential Bayesian Optimisation](https://github.com/leojklarner/gauche/blob/main/notebooks/Preferential%20Bayesian%20Optimisation.ipynb)|[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/leojklarner/gauche/blob/main/notebooks/Preferential%20Bayesian%20Optimisation.ipynb) |