small fix

Author: Surayya Huseyn Zada

src/Containers/Microsoft.NET.Build.Containers/ImageIndexGenerator.cs

@@ -21,7 +21,7 @@ internal static (string, string) GenerateImageIndex(BuiltImage[] images)
     {
         if (images.Length == 0)
         {
-            throw new ArgumentException(string.Format(Strings.ImagesEmpty));
+            throw new ArgumentException(Strings.ImagesEmpty);
         }
 
         string manifestMediaType = images[0].ManifestMediaType;
@@ -49,9 +49,9 @@ internal static string GenerateImageIndex(BuiltImage[] images, string manifestMe
     {
         if (images.Length == 0)
         {
-            throw new ArgumentException(string.Format(Strings.ImagesEmpty));
+            throw new ArgumentException(Strings.ImagesEmpty);
         }
-        
+
         // Here we are using ManifestListV2 struct, but we could use ImageIndexV1 struct as well.
         // We are filling the same fields, so we can use the same struct.
         var manifests = new PlatformSpecificManifest[images.Length];