Confusing example of substitution in methods

[mattkohl]

Should this example (from creative-scala/src/pages/methods/semantics.md):

{
 val x = 2
 square(2)
}

have x as an argument to the square method:

{
  val x = 2
  square(x)
}

?

[noelwelsh]

Yes, that looks like an error.