message: docs: add example api request
diff: @@ -99,7 +99,6 @@ Payload:
  1 // lifeline group id
  ]
  }
  -
  ```
  I will get this response (in the same topic without the suffix `/set`):
  @@ -114,6 +113,22 @@ I will get this response (in the same topic without the suffix `/set`):
  `result` will contain the value returned from the API. In this example I will get an array with all node IDs that are associated to the group 1 (lifeline) of node 23.
  +#### Execute Scene
  +
  +Execute the scene with the id `1` via mqtt.
  +
  +Topic: `zwave/_CLIENTS/ZWAVE_GATEWAY-office/api/_activateScene/set`
  +
  +Payload:
  +
  +```js
  +{
  + "args": [
  + 1 // id of scene
  + ]
  +}
  +```
  +
  #### Send Command
  Example calling [startLevelChange](https://github.com/zwave-js/node-zwave-js/blob/c695ee81cb2b1d3cf15e3db1cc14b1e41a911cc0/packages/zwave-js/src/lib/commandclass/MultilevelSwitchCC.ts) command:
  