fix paths to example notebooks (#647)

* fix paths to example notebooks

* change only links (no execution counts, ...)

---------

Co-authored-by: Johanna Haffner <johanna.haffner@bsse.ethz.ch>

Author: johannahaffner

docs/examples/continuous_normalising_flow.ipynb

@@ -36,7 +36,7 @@
     "}\n",
     "```\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/continuous_normalising_flow.ipynb).\n",
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/continuous_normalising_flow.ipynb).\n",
     "\n",
     "!!! warning\n",
     "\n",

docs/examples/coupled_odes.ipynb

@@ -15,7 +15,7 @@
    "source": [
     "This example demonstrates basic functionality for solving a system of coupled ODEs; in this the [Lotka–Volterra](https://en.wikipedia.org/wiki/Lotka%E2%80%93Volterra_equations) equations.\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/coupled_odes.ipynb)."
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/coupled_odes.ipynb)."
    ]
   },
   {

docs/examples/forcing.ipynb

@@ -15,7 +15,7 @@
    "source": [
     "This example demonstrates how to incorporate an external forcing term into the solve. This is really simple: just evaluate it as part of the vector field like anything else.\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/forcing.ipynb)."
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/forcing.ipynb)."
    ]
   },
   {

docs/examples/hessian.ipynb

@@ -15,7 +15,7 @@
    "source": [
     "This example demonstrates how to compute the Hessian of a differential equation solve.\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/hessian.ipynb)."
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/hessian.ipynb)."
    ]
   },
   {

docs/examples/kalman_filter.ipynb

@@ -13,7 +13,7 @@
    "source": [
     "This example optimizes the parameters of a [Kalman-Filter](https://en.wikipedia.org/wiki/Kalman_filter).\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/kalman_filter.ipynb)."
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/kalman_filter.ipynb)."
    ]
   },
   {

docs/examples/latent_ode.ipynb

@@ -61,7 +61,7 @@
     "}\n",
     "```\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/latent_ode.ipynb)."
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/latent_ode.ipynb)."
    ]
   },
   {

docs/examples/neural_cde.ipynb

@@ -43,7 +43,7 @@
     "}\n",
     "```\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/neural_cde.ipynb)."
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/neural_cde.ipynb)."
    ]
   },
   {

docs/examples/neural_ode.ipynb

@@ -15,7 +15,7 @@
    "source": [
     "This example trains a [Neural ODE](https://arxiv.org/abs/1806.07366) to reproduce a toy dataset of nonlinear oscillators.\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/neural_ode.ipynb)."
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/neural_ode.ipynb)."
    ]
   },
   {

docs/examples/neural_sde.ipynb

@@ -48,7 +48,7 @@
     "}\n",
     "```\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/neural_sde.ipynb).\n",
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/neural_sde.ipynb).\n",
     "\n",
     "!!! warning\n",
     "\n",

docs/examples/nonlinear_heat_pde.ipynb

@@ -43,7 +43,7 @@
     "\n",
     "---\n",
     "\n",
-    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/examples/nonlinear_heat_pde.ipynb).\n",
+    "This example is available as a Jupyter notebook [here](https://github.com/patrick-kidger/diffrax/blob/main/docs/examples/nonlinear_heat_pde.ipynb).\n",
     "\n",
     "\n",
     "!!! danger \"Advanced example\"\n",