defaults for spatial and using OrdinaryDiffEqTsit5 in hybrid docstring

Author: TorkelE

src/reactionsystem_conversions.jl

@@ -795,7 +795,7 @@ end
 
 Example:
 ```julia
-using Catalyst, OrdinaryDiffEq, JumpProcesses, Plots
+using Catalyst, OrdinaryDiffEqTsit5, JumpProcesses, Plots
 rn = @reaction_network begin
     k*(1 + sin(t)), 0 --> A
 end

src/spatial_reaction_systems/lattice_reaction_systems.jl

@@ -27,7 +27,7 @@ are possible.
 Example:
 ```julia
 # Fetch packages.
-using Catalyst, OrdinaryDiffEqTsit5
+using Catalyst, OrdinaryDiffEqDefault
 import CairoMakie
 
 # Creates the `LatticeReactionSystem` model.
@@ -43,7 +43,7 @@ u0 = [:X => rand(5,5)]
 tspan = (0.0, 1.0)
 ps = [:p => 1.0, :d => 0.5, :D => 0.1]
 oprob = ODEProblem(lrs, u0, tspan, ps)
-osol = solve(oprob, Tsit5())
+osol = solve(oprob)
 
 # Saves an animation of the solution to the file "lattice_animation.mp4".
 lattice_animation(osol, :X, lrs, "lattice_animation.mp4")

src/spatial_reaction_systems/lattice_sim_struct_interfacing.jl

@@ -307,7 +307,7 @@ Notes:
 
 Example:
 ```julia
-using Catalyst, OrdinaryDiffEqTsit5
+using Catalyst, OrdinaryDiffEqDefault
 
 # Prepare `LatticeReactionSystem`s.
 rs = @reaction_network begin
@@ -322,7 +322,7 @@ tspan = (0.0, 10.0)
 ps = [:k1 => 1, :k2 => 2.0, :D => 0.1]
 
 oprob = ODEProblem(lrs1, u0, tspan, ps)
-osol = solve(oprob1, Tsit5())
+osol = solve(oprob)
 lat_getu(osol, :X1, lrs) # Returns the value of X1 at each time step.
 lat_getu(osol, :X1, lrs; t = 0.0:10.0) # Returns the value of X1 at times 0.0, 1.0, ..., 10.0
 ```