message: Update calculator_embedded_actions.js
  Fix typo in example rule
diff: @@ -152,13 +152,13 @@ class Calculator extends Parser {
  return $.OR([
  // categorieshesisExpression has the highest precedence and thus it appears
  // in the "lowest" leaf in the expression ParseTree.
  - { ALT: () => $.SUBRULE($.categorieshesisExpression) },
  + { ALT: () => $.SUBRULE($.parenthesisExpression) },
  { ALT: () => parseInt($.CONSUME(NumberLiteral).image, 10) },
  { ALT: () => $.SUBRULE($.powerFunction) }
  ])
  })
  - $.RULE("categorieshesisExpression", () => {
  + $.RULE("parenthesisExpression", () => {
  let expValue
  $.CONSUME(LParen)
  