Fix line number reference in NamedPipeServer comment

Co-authored-by: nohwnd <[email protected]>

Author: Copilot

src/Cli/dotnet/Commands/Test/MTP/IPC/NamedPipeServer.cs

@@ -236,7 +236,7 @@ public void Dispose()
                 // If the loop task is null at this point we have race condition, means that the task didn't start yet and we already dispose.
                 // This is unexpected and we throw an exception.
 
-                // To close gracefully we need to ensure that the client closed the stream line 103.
+                // To close gracefully we need to ensure that the client closed the stream and the InternalLoopAsync method has exited.
                 if (!_loopTask!.Wait(TimeSpan.FromSeconds(90)))
                 {
                     throw new InvalidOperationException(CliCommandStrings.InternalLoopAsyncDidNotExitSuccessfullyErrorMessage);