Data types change fix

Author: i4004

src/Simplify.Web.Multipart/Model/MultipartViewModel.cs

@@ -14,14 +14,14 @@ public class MultipartViewModel
 		/// <value>
 		/// The files.
 		/// </value>
-		public List<FilePart> Files { get; set; }
+		public IReadOnlyList<FilePart> Files { get; set; }
 
 		/// <summary>
 		/// HTTP multipart form data parameters
 		/// </summary>
 		/// <value>
 		/// The parameters.
 		/// </value>
-		public List<ParameterPart> Parameters { get; set; }
+		public IReadOnlyList<ParameterPart> Parameters { get; set; }
 	}
 }