Fix getting started docs (trixi-framework#631)

Author: efaulhaber

docs/Project.toml

@@ -2,6 +2,7 @@
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 DocumenterCitations = "daee34ce-89f3-4625-b898-19384cb65244"
 OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
+Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 PointNeighbors = "1c4d5385-0a27-49de-8e2c-43b175c8985c"
 TrixiBase = "9a0f1c46-06d5-4909-a5a3-ce25d3fa3284"
 

docs/src/getting_started.md

@@ -18,6 +18,11 @@ Then start the simulation by executing
 julia> trixi_include(joinpath(examples_dir(), "fluid", "hydrostatic_water_column_2d.jl"))
 ```
 
+The easiest way to quickly visualize the result is to use Plots.jl:
+```jldoctest getting_started; filter = r".*"s, setup=:(trixi_include(@__MODULE__, joinpath(examples_dir(), "fluid", "hydrostatic_water_column_2d.jl")))
+julia> using Plots; plot(sol)
+```
+
 This will open a new window with a 2D visualization of the final solution:
 ![plot_hydrostatic_water_column](https://github.com/trixi-framework/TrixiParticles.jl/assets/44124897/95821154-577d-4323-ba57-16ef02ea24e0)