MQTT server in log

ampel-firmware/mqtt.cpp

@@ -100,8 +100,9 @@ namespace mqtt {
       return;
     }
 
-    Serial.print(F("MQTT - Attempting connection ("));
-    Serial.print(MQTT_ENCRYPTED ? F("Encrypted") : F("Unencrypted"));
+    Serial.print(F("MQTT - Attempting connection to "));
+    Serial.print(MQTT_SERVER);
+    Serial.print(MQTT_ENCRYPTED ? F(" (Encrypted") : F(" (Unencrypted"));
     Serial.print(F(", port "));
     Serial.print(MQTT_PORT);
     Serial.print(F(") ..."));