📝 Link to archived RA Control Panel page (MarlinFirmware#25424)

Author: ellensp

Marlin/Configuration.h

@@ -2653,7 +2653,7 @@
 
 //
 // Elefu RA Board Control Panel
-// http://www.elefu.com/index.php?route=product/product&product_id=53
+// https://web.archive.org/web/20140823033947/http://www.elefu.com/index.php?route=product/product&product_id=53
 //
 //#define RA_CONTROL_PANEL