updated copy for no-routes-not-found

public/language/en-GB/admin/advanced/errors.json

@@ -8,7 +8,7 @@
 	"clear-error-log": "Clear Error Log",
 	"route": "Route",
 	"count": "Count",
-	"no-routes-not-found": "Hooray! There are no routes that were not found.",
+	"no-routes-not-found": "Hooray! No 404 errors!",
 	"clear404-confirm": "Are you sure you wish to clear the 404 error logs?",
 	"clear404-success": "\"404 Not Found\" errors cleared"
 }