Merge branch 'update_config' into 'master'

To fix error while using update_config script

See merge request detectors/pycalibration!339

webservice/webservice.py

@@ -176,7 +176,7 @@ async def change_config(socket, config, updated_config, karabo_id, instrument, c
                 if action != "data-mapping":
                     subconf[action][instrument] = instruments[instrument]
                 else:
-                    subconf[action][instrument] = instruments[karabo_id]
+                    subconf[action][karabo_id] = instruments[karabo_id]
             with open(fpath, "w") as wf:
                 wf.write(yaml.dump(subconf, default_flow_style=False))
     new_conf = None