fix a rename bug 😅

src/NuGet.Core/NuGet.ProjectModel/Utf8JsonStreamPackageSpecReader.cs

@@ -18,7 +18,7 @@
 
 namespace NuGet.ProjectModel
 {
-    internal static class JsonStreamPackageSpecReaderPropertyName
+    internal static class Utf8JsonStreamPackageSpecReader
     {
         private static readonly char[] VersionSeparators = new[] { ';' };
         private static readonly byte[] AuthorsPropertyName = Encoding.UTF8.GetBytes("authors");