Fix path

Author: JimBobSquarePants

tests/ImageSharp.Tests/Formats/Png/PngDecoderTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
-using System.IO;
 using System.Runtime.Intrinsics.X86;
 using Microsoft.DotNet.RemoteExecutor;
 using SixLabors.ImageSharp.Formats;

tests/ImageSharp.Tests/TestImages.cs

@@ -73,7 +73,7 @@ public static class Png
         public const string DisposeBackgroundRegion = "Png/animated/15-dispose-background-region.png";
         public const string DisposePreviousFirst = "Png/animated/12-dispose-prev-first.png";
         public const string BlendOverMultiple = "Png/animated/21-blend-over-multiple.png";
-        public const string Issue2666 = "Png/Issues/Issue_2666.png";
+        public const string Issue2666 = "Png/issues/Issue_2666.png";
 
         // Filtered test images from http://www.schaik.com/pngsuite/pngsuite_fil_png.html
         public const string Filter0 = "Png/filter0.png";