message: Update style guide citation about redundant semicolons.
diff: @@ -42,7 +42,7 @@ absl::string_view ForbidConsecutiveNullStatementsRule::Name() {
  return "forbid-consecutive-null-statements";
  }
  const char ForbidConsecutiveNullStatementsRule::kTopic[] =
  - "consecutive-null-statements";
  + "redundant-semicolons";
  const char ForbidConsecutiveNullStatementsRule::kMessage[] =
  "Do not use consecutive null statements like \';;\'.";
  @@ -56,6 +56,7 @@ std::string ForbidConsecutiveNullStatementsRule::GetDescription(
  void ForbidConsecutiveNullStatementsRule::HandleLeaf(
  const verible::SyntaxTreeLeaf& leaf, const SyntaxTreeContext& context) {
  if (context.IsInside(NodeEnum::kForSpec)) {
  + // for loops are allowed to be: for (;;)
  state_ = State::kNormal;
  } else {
  switch (state_) {
  