Update LLC summary

Author: sierpinskid

Assets/Plugins/StreamChat/Core/LowLevelClient/StreamChatLowLevelClient.cs

@@ -40,8 +40,10 @@
 namespace StreamChat.Core.LowLevelClient
 {
     /// <summary>
-    /// Stream Chat Client - maintains WebSockets connection, executes API calls and exposes Stream events to which you can subscribe.
-    /// There should be only one instance of this client in your application.
+    /// Stream Low-Level Chat Client - maintains WebSockets connection, executes API calls and exposes Stream events to which you can subscribe.
+    /// There should be only one instance of this client in your application. This client does NOT maintain state.
+    ///
+    /// Unless you have a good reason to use the low-level client, you should be using the stateful <see cref="IStreamChatClient"/> which maintain client state
     /// </summary>
     public class StreamChatLowLevelClient : IStreamChatLowLevelClient
     {