message: docs: fix typo in blog post
diff: @@ -146,7 +146,7 @@ Using this structure, you can traverse through the tree and print each of the to
  # `let value = 42;`
  Node(VariableDeclaration, children: [
  Token(LetKeyword, "let"),
  - Token(Whitespce, " "),
  + Token(Whitespace, " "),
  Node(VariableDeclarator, children: [
  Node(BindingIdentifier, children: [
  Token(Identifier, "value"),
  