Update main.py heater_calorimeter -> immersion_heater

main.py

@@ -64,7 +64,7 @@ m_pck.logging_calorimetry(data, metadata, path_logging, path_json)
 if is_log_heater:
     # Read heater's uuid from metadata.
     heater_uuid = metadata["actor"]["values"][
-        metadata["actor"]["names"].index("heater_calorimeter")
+        metadata["actor"]["names"].index("immersion_heater")
     ]
     # Save heater-related data to an HDF5 file.
     data = m_labor.logging_heater(