Updated doc

ampel-firmware/co2_sensor.cpp

@@ -147,8 +147,7 @@ namespace sensor {
 
   void startCalibrationProcess() {
     /** From the sensor documentation:
-     * For best results, the sensor has to be run in a stable environment in continuous mode at
-     * a measurement rate of 2s for at least two minutes before applying the FRC command and sending the reference value.
+     * Before applying FRC, SCD30 needs to be operated for 2 minutes with the desired measurement period in continuous mode.
      */
     Serial.print(F("Setting SCD30 timestep to "));
     Serial.print(config::timestep_during_calibration);