Merge pull request #5293 from bobmyhill/center

Fix Britishism

benchmarks/yamauchi_takei_2016_anelasticity/doc/yamauchi_takei_2016_anelasticity.md

@@ -88,7 +88,7 @@ $\frac{z}{30}$. The normalised shear wave period, $\tau_S^{\prime}$, in
 where $\tau_S = 100~\text{ s}$ is the shear wave period and
 $\tau_M = \frac{\eta}{\mu_U}$ is the normalised Maxwell relaxation timescale.
 $\tau_P^{\prime}$ represents the normalised shear-wave period associated with
-the centre of the high frequency relaxation peak, assumed to be
+the center of the high frequency relaxation peak, assumed to be
 $6 \times 10^{-5}$. The shear viscosity, $\eta$, is
 ```{math}
 :label: eq:eta