fix examples deps

Author: andreapasquale94

docs/make.jl

@@ -15,7 +15,7 @@ if CI
 
     # Examples 
     Pkg.add("DiffEqBase")
-    Pkg.add("OrdinaryDiffEqVerner")
+    Pkg.add("OrdinaryDiffEq")
 end
 
 include("generate.jl")

docs/src/Examples/e00_ode.jl

@@ -37,7 +37,7 @@ add_point!(G, :Earth, 399, 1)
 # but more complex models can be used. We interface with [`SciML`](https://github.com/SciML) 
 # ODE solvers to compute the trajectory solution.
 
-using OrdinaryDiffEqVerner
+using OrdinaryDiffEq
 using DiffEqBase
 
 # Now we create the problem with a given initial condition, time-span and gravitational