Update docs/literate/src/files/first_steps/create_first_setup.jl

Co-authored-by: Joshua Lampert <[email protected]>

docs/literate/src/files/first_steps/create_first_setup.jl

@@ -45,7 +45,7 @@ advection_velocity = (0.2, -0.7)
 equations = LinearScalarAdvectionEquation2D(advection_velocity)
 
 # To solve our problem numerically using Trixi.jl, we have to discretize the spatial
-# domain, for which we set up a mesh. One of the most used meshes in Trixi.jl is
+# domain, for which we set up a mesh. One of the most used meshes in Trixi.jl is the
 # [`TreeMesh`](@ref). The spatial domain used is ``[-1, 1] \times [-1, 1]``. We set an initial number
 # of elements in the mesh using `initial_refinement_level`, which describes the initial number of
 # hierarchical refinements. The variable `n_cells_max` is used to limit the number of elements in the mesh,