fix typo

src/wrapper/cs/classes/LightstreamerClient.cs

@@ -29,7 +29,7 @@ namespace com.lightstreamer.client
     /// So, normally, a single instance of LightstreamerClient is needed. <br/>
     /// However, multiple instances of LightstreamerClient can be used,
     /// toward the same or multiple endpoints.
-    /// <p>
+    /// <p/>
     /// You can listen to the events generated by a session by registering an event listener, such as <see cref="ClientListener"/> or <see cref="SubscriptionListener"/>. 
     /// These listeners allow you to handle various events, such as session creation, connection status, subscription updates, and server messages. 
     /// However, you should be aware that the event notifications are dispatched by a single thread, the so-called event thread.