Merge pull request #741 from DoktorMike/patch-1

fix: Update sde_example.md

docs/src/tutorials/sde_example.md

@@ -317,7 +317,7 @@ function f(du, u, p, t)
 end
 function g(du, u, p, t)
     du[1] = √u[2] * u[1]
-    du[2] = Θ * √u[2]
+    du[2] = σ * √u[2]
 end
 ```