Update docs/examples/oceanmodelling.py

Signed-off-by: Daniel Dodd <daniel_dodd@icloud.com>

docs/examples/oceanmodelling.py

@@ -414,7 +414,7 @@ def plot_fields(
 #
 # This is reminiscent of a 3 dimensional [Helmholtz decomposition](https://en.wikipedia.org/wiki/Helmholtz_decomposition).
 #
-# The 2 dimensional decomposition motivates a different approach: placing priors on $\Psi$ and $\Phi$, allowing us to make assumptions directly about fundamental properties of $\mathbf{F}$. If we choose independent GP priors such that $\Phi \sim \mathcal{G P}\left(0, k_{\Phi}\right)$ and $\Psi \sim \mathcal{G P}\left(0, k_{\Psi}\right)$, then $\mathbf{F} \sim \mathcal{G P} \left(0, k_\text{Helm}\right)$ (since acting linear operations on a GPs give GPs).
+# The 2-dimensional decomposition motivates a different approach: placing priors on $\Psi$ and $\Phi$, allowing us to make assumptions directly about fundamental properties of $\mathbf{F}$. If we choose independent GP priors such that $\Phi \sim \mathcal{G P}\left(0, k_{\Phi}\right)$ and $\Psi \sim \mathcal{G P}\left(0, k_{\Psi}\right)$, then $\mathbf{F} \sim \mathcal{G P} \left(0, k_\text{Helm}\right)$ (since acting linear operations on a GPs give GPs).
 #
 # For $\mathbf{X}, \mathbf{X}^{\prime} \in \mathbb{R}^2 \times \left\{0,1\right\}$ and $z, z^\prime \in \{0,1\}$,
 #