Code formatting and warning fixing.

AdventOfCode2023.Tests/Day04_Tests.cs

@@ -2,20 +2,20 @@ namespace AdventOfCode2023.Tests;
 
 public class Day04_Tests
 {
-    private readonly string[] _example = {
+    private readonly string[] _example = [
         "Card 1: 41 48 83 86 17 | 83 86  6 31 17  9 48 53",
         "Card 2: 13 32 20 16 61 | 61 30 68 82 17 32 24 19",
         "Card 3:  1 21 53 59 44 | 69 82 63 72 16 21 14  1",
         "Card 4: 41 92 73 84 69 | 59 84 76 51 58  5 54 83",
         "Card 5: 87 83 26 28 32 | 88 30 70 12 93 22 82 36",
         "Card 6: 31 18 13 56 72 | 74 77 10 23 35 67 36 11",
-    };
+    ];
 
     [Fact]
     public void ResolvePart1__Example()
     {
         Day04 day = new();
-        
+
         string result = day.ResolvePart1(_example);
 
         Assert.Equal("13", result);
@@ -25,7 +25,7 @@ public class Day04_Tests
     public void ResolvePart2__Example()
     {
         Day04 day = new();
-        
+
         string result = day.ResolvePart2(_example);
 
         Assert.Equal("30", result);