Update docs/src/catalyst_applications/advanced_simulations.md

Co-authored-by: Sam Isaacson <[email protected]>

Author: TorkelE

docs/src/catalyst_applications/advanced_simulations.md

@@ -312,7 +312,7 @@ plot(sol_1; idxs = :X1, ylimit = (0.0, 20.0))
 Here we can see that the `X` concentration fluctuates around a steady state of $X≈10.0$.
 
 Next, we wish to introduce a noise scaling parameter ,`η`. This will scale the
-noise magnitude so that for $η≈0.0$ the system lacks noise (and its SDE
+noise magnitude so that for $η=0.0$ the system lacks noise (and its SDE
 simulations are identical to its ODE simulations) and for $η=1.0$ noise is not
 scaled (and SDE simulations are identical to as if no noise scaling was used).
 Setting $η<1.0$ will reduce noise and $η>1.0$ will increase noise. The syntax