Update DotNet_Security_Cheat_Sheet.md

cheatsheets/DotNet_Security_Cheat_Sheet.md

@@ -796,6 +796,7 @@ objects received from the network
 
 DO NOT: Use the BinaryFormatter type which is dangerous and [not recommended](https://learn.microsoft.com/en-us/dotnet/standard/serialization/binaryformatter-security-guide) for data processing.
 .NET offers several in-box serializers that can handle untrusted data safely:
+
 - XmlSerializer and DataContractSerializer to serialize object graphs into and from XML. Do not confuse DataContractSerializer with NetDataContractSerializer.
 - BinaryReader and BinaryWriter for XML and JSON.
 - The System.Text.Json APIs to serialize object graphs into JSON.