Update READMEs with small fixes

section-4.2.1-jeans-instability/README.md

@@ -39,11 +39,11 @@ This script accesses the precomputed exact energy profiles stored in `E_kin.txt`
 ## Sec. 4.2.1, Figures 5, Jeans test gravity sub-cycle distribution
 **Fig. 5a:**
 ```julia
-Trixi.run("parameters_jeans_instability.toml")
+julia> Trixi.run("parameters_jeans_instability.toml")
 ```
 
 **Fig. 5b:**
 ```julia
-Trixi.run("parameters_jeans_instability.toml",
-          time_integration_scheme_gravity="timestep_gravity_erk52_3Sstar!", cfl_gravity=1.2)
+julia> Trixi.run("parameters_jeans_instability.toml",
+                 time_integration_scheme_gravity="timestep_gravity_erk52_3Sstar!", cfl_gravity=1.2)
 ```

section-4.2.2-sedov-blast/README.md

@@ -12,49 +12,48 @@ julia> Pkg.instantiate()
 
 julia> using Trixi
 
-julia> const TRIXI_DIR = pathof(Trixi) |> dirname |> dirname
+julia> const TRIXI_DIR = pathof(Trixi) |> dirname |> dirname # Only required for postprocessing
 ```
 After that, you can generate the Sedov self gravity data for the figures by running the following code in the Julia REPL.
 
 
 ## Sec. 4.2.2, Figure 6, T=0.5, AMR meshes for Sedov + gravity
 **T = 0.0 and T = 0.5:**
 ```julia
-Trixi.run("parameters_sedov_self_gravity.toml", t_end=0.5)
+julia> Trixi.run("parameters_sedov_self_gravity.toml", t_end=0.5)
 ```
 
 **T = 1.0:**
 ```julia
-Trixi.run("parameters_sedov_self_gravity.toml")
+julia> Trixi.run("parameters_sedov_self_gravity.toml")
 ```
 
 ## Sec. 4.2.2, Figure 7a, T=0.5, Sedov + gravity
 **AMR mesh:**
 ```julia
-Trixi.run("parameters_sedov_self_gravity.toml", t_end=0.5)
+julia> Trixi.run("parameters_sedov_self_gravity.toml", t_end=0.5)
 ```
 
 **Uniform mesh:**
 ```julia
-Trixi.run("parameters_sedov_self_gravity.toml",
-          amr_interval=0, initial_refinement_level=8, t_end=0.5)
+julia> Trixi.run("parameters_sedov_self_gravity.toml", amr_interval=0, initial_refinement_level=8, t_end=0.5)
 ```
 
 ## Sec. 4.2.2, Figure 7b, T=1.0, Sedov + gravity
 **AMR mesh:**
 ```julia
-Trixi.run("parameters_sedov_self_gravity.toml")
+julia> Trixi.run("parameters_sedov_self_gravity.toml")
 ```
 
 **Uniform mesh:**
 ```julia
-Trixi.run("parameters_sedov_self_gravity.toml", amr_interval=0, initial_refinement_level=8)
+julia> Trixi.run("parameters_sedov_self_gravity.toml", amr_interval=0, initial_refinement_level=8)
 ```
 
 ## Sec. 4.2.2, Table 6, Sedov + gravity, performance uniform vs. AMR
 **AMR mesh:**
 ```julia
-julia> Trixi.run("parameters_sedov_self_gravity.toml"))
+julia> Trixi.run("parameters_sedov_self_gravity.toml")
 ```
 
 **Uniform mesh:**
@@ -65,8 +64,9 @@ julia> Trixi.run(parameters_sedov_self_gravity.toml", amr_interval=0)
 ## Converting Trixi.jl's .h5 files to VTK/VTI
 To postprocess the solution files use
 ```julia
-shell> $TRIXI_DIR/postprocessing/trixi2vtk --nvisnodes 8 --format vti path/to/solution_euler_xxx.h5
+shell> $TRIXI_DIR/postprocessing/trixi2vtk --nvisnodes 8 --format vti out/solution_euler_000000.h5
 
-shell> $TRIXI_DIR/postprocessing/trixi2vtk --nvisnodes 8 --format vti path/to/solution_gravity_xxx.h5
+shell> $TRIXI_DIR/postprocessing/trixi2vtk --nvisnodes 8 --format vti out/solution_gravity_000000.h5
 ```
-Then one can generate the plots using a visualization tool like Paraview or VisIt.
+Then one can generate the plots using a visualization tool like [ParaView](https://www.paraview.org)
+or [VisIt](https://visit.llnl.gov).