chore: format code with dart format

Author: abbashosseinii

pkgs/collection/benchmark/dataset_generator.dart

@@ -7,7 +7,6 @@
 /// Ensures all algorithms are tested on the exact same data.
 library;
 
-
 import 'dart:math';
 
 const size = 50000;
@@ -51,4 +50,4 @@ List<List<int>> _generatePathological() {
       if (i.isOdd) base[i],
   ];
   return List.generate(count, (_) => List<int>.from(pathological));
-}
+}

pkgs/collection/benchmark/sort_benchmark.dart

@@ -369,4 +369,4 @@ void _movingInsertionSortBaseline<E, K>(
     target.setRange(min + 1, targetOffset + i + 1, target, min);
     target[min] = element;
   }
-}
+}