Fix test

Author: elinor-fung

src/libraries/System.Runtime.InteropServices/tests/LibraryImportGenerator.UnitTests/ConvertToLibraryImportFixerTests.cs

@@ -519,23 +519,23 @@ partial class Enclosing
 {
     partial class Test
     {
-        [GeneratedDllImport(""DoesNotExist"")]
+        [LibraryImport(""DoesNotExist"")]
         public static partial int {|CS8795:Method|}(out int ret);
-        [GeneratedDllImport(""DoesNotExist"")]
+        [LibraryImport(""DoesNotExist"")]
         public static partial int {|CS8795:Method2|}(out int ret);
-        [GeneratedDllImport(""DoesNotExist"")]
+        [LibraryImport(""DoesNotExist"")]
         public static partial int {|CS8795:Method3|}(out int ret);
     }
 }
 partial class EnclosingPartial
 {
     partial class Test
     {
-        [GeneratedDllImport(""DoesNotExist"")]
+        [LibraryImport(""DoesNotExist"")]
         public static partial int {|CS8795:Method|}(out int ret);
-        [GeneratedDllImport(""DoesNotExist"")]
+        [LibraryImport(""DoesNotExist"")]
         public static partial int {|CS8795:Method2|}(out int ret);
-        [GeneratedDllImport(""DoesNotExist"")]
+        [LibraryImport(""DoesNotExist"")]
         public static partial int {|CS8795:Method3|}(out int ret);
     }
 }";