message: fix: missing closing parenthesis in examples
  user_guide/advanced_configuration was missing closing parenthesis when calling bench_function
diff: @@ -20,7 +20,7 @@ fn bench(c: &mut Criterion) {
  // Configure Criterion.rs to detect smaller differences and increase sample size to improve
  // precision and counteract the resulting noise.
  group.significance_level(0.1).sample_size(500);
  - group.bench_function("my-function", |b| b.iter(|| my_function());
  + group.bench_function("my-function", |b| b.iter(|| my_function()));
  group.finish();
  }
  @@ -40,7 +40,7 @@ fn my_function() {
  fn bench(c: &mut Criterion) {
  let mut group = c.benchmark_group("sample-size-example");
  - group.bench_function("my-function", |b| b.iter(|| my_function());
  + group.bench_function("my-function", |b| b.iter(|| my_function()));
  group.finish();
  }
  @@ -182,7 +182,7 @@ fn my_function() {
  fn bench(c: &mut Criterion) {
  let mut group = c.benchmark_group("flat-sampling-example");
  group.sampling_mode(SamplingMode::Flat);
  - group.bench_function("my-function", |b| b.iter(|| my_function());
  + group.bench_function("my-function", |b| b.iter(|| my_function()));
  group.finish();
  }
  