fix png name
fix png name

Lightstreamer/Lightstreamer-example-StockList-client-aspnetajax,Weswit/Lightstreamer-example-StockList-client-aspnetajax,Lightstreamer/Lightstreamer-example-StockList-client-aspnetajax,Weswit/Lightstreamer-example-StockList-client-aspnetajax