co2_sensor: Move comment and wrap overlong line

ampel-firmware/co2_sensor.cpp

@@ -213,9 +213,9 @@ namespace sensor {
       temperature = scd30.getTemperature();
       humidity = scd30.getHumidity();
 
-      //NOTE: Data is available, but it's sometimes erroneous: the sensor outputs zero ppm but non-zero temperature and non-zero humidity.
       if (co2 <= 0) {
-        // No measurement yet. Waiting.
+        // NOTE: Data is available, but it's sometimes erroneous: the sensor outputs
+        // zero ppm but non-zero temperature and non-zero humidity.
         switchState(BOOTUP);
       } else if (co2 < 250) {
         // Sensor should be calibrated.