Updated summary (#19087)

Author: shaggygi

src/Servers/Connections.Abstractions/src/ConnectionHandler.cs

@@ -6,15 +6,15 @@
 namespace Microsoft.AspNetCore.Connections
 {
     /// <summary>
-    /// Represents an end point that multiple connections connect to. For HTTP, endpoints are URLs, for non HTTP it can be a TCP listener (or similar)
+    /// Represents an endpoint that multiple connections connect to. For HTTP, endpoints are URLs, for non-HTTP it can be a TCP listener (or similar).
     /// </summary>
     public abstract class ConnectionHandler
     {
         /// <summary>
-        /// Called when a new connection is accepted to the endpoint
+        /// Called when a new connection is accepted to the endpoint.
         /// </summary>
         /// <param name="connection">The new <see cref="ConnectionContext"/></param>
         /// <returns>A <see cref="Task"/> that represents the connection lifetime. When the task completes, the connection is complete.</returns>
         public abstract Task OnConnectedAsync(ConnectionContext connection);
     }
-}
+}