Remove extra "[ ]" from PrintExample() message

Author: Rion5

LeetCode/ContainsDuplicate.cs

@@ -46,7 +46,7 @@ public override void PrintExample()
  var result = containsDuplicates(this._nums);
  watch.Stop();
  Console.WriteLine($"217. Contains Duplicates\n" +
- $"Input nums = [{this.printInputArray(this._nums)}] \n" +
+ $"Input Array = {this.printInputArray(this._nums)} \n" +
  $"Result: [{result}] \n" +
  $"Execution Speed: {watch.ElapsedMilliseconds}ms \n");
  }