LandingPage should be equal to URL

src/main/java/sensor2graph/Sensor.java

@@ -116,7 +116,7 @@ class Sensor {
 		add_attribute(body,
 			"9",
 			"URL",
-			new JsonPrimitive("https://sensordata.open-forecast.eu/")
+			new JsonPrimitive("https://sensor.community/")
 		);
 		add_attribute(body,
 			"10",