Update connection pool doc

Author: justcoding121

src/Titanium.Web.Proxy/ProxyServer.cs

@@ -167,8 +167,12 @@ public ProxyServer(string? rootCertificateName, string? rootCertificateIssuerNam
         public bool Enable100ContinueBehaviour { get; set; }
 
         /// <summary>
-        ///     Should we enable experimental server connection pool?
-        ///     Defaults to true.
+        ///     Should we enable server connection pool. Defaults to true.
+        ///     When you enable connection pooling, instead of creating a new TCP connection to server for each client TCP connection, 
+        ///     we check if a server connection is available in our cached pool. If it is available in our pool, 
+        ///     created from earlier requests to the same server, we will reuse those idle connections. 
+        ///     There is also a ConnectionTimeOutSeconds parameter, which determine the eviction time for inactive server connections. 
+        ///     This will help to reduce TCP connection establishment cost, both the wall clock time and CPU cycles. 
         /// </summary>
         public bool EnableConnectionPool { get; set; } = true;