message: docs: fix typos in parameterized rules docs
diff: Chevrotain supports passing parameters to rules.
  This means that grammar rules may accept arguments from the calling rule.
  This is often used in combination with [gates](./gates.md) to
  -to represent multiple variants of the same parsing rule while avoiding code duplication.
  -It can also
  +represent multiple variants of the same parsing rule while avoiding code duplication.
  For example:
  