fixed the SPaRK naming

docs/devdocs/srk_example.ipynb

@@ -266,7 +266,7 @@
     "This variant of the Euler-Maruyama makes use of the space-time Levy area, which improves its local error to $O(h^2)$ compared to $O(h^{1.5})$ of the standard Euler-Maruyama. Nevertheless, it has a strong order of only 1 for additive-noise SDEs.\n",
     "\n",
     "\n",
-    " ### The \"Space-Time Optimal Runge-Kutta\" method\n",
+    " ### The \"Splitting Path Runge-Kutta\" (SPaRK) method\n",
     "This is a general Stochastic Runge-Kutta method with 3 evaluations of the vector field per step,\n",
     "based on Definition 1.6 from\n",
     "Foster, J. (2023).\n",