Missing links (404 page not found error)

[NipuniSenani]

Describe the bug
In m1a_neural_ode_cookbook : Links to the advanced models are not working

Step to Reproduce

Steps to reproduce the behavior:

1.Go to https://github.com/DiffEqML/torchdyn/blob/master/tutorials/module1-neuralde/m1a_neural_ode_cookbook.ipynb
2. Click on
3. Multiple Shooting Layers
Hamiltonian Neural Networks
Lagrangian Neural Networks
Continuous Normalizing Flows
Graph Neural ODEs

3.See error

Screenshots