fix(docs): update send_feedback docstrings

docs/source/integrate_hardware.mdx

@@ -300,10 +300,6 @@ def send_action(self, action: dict[str, Any]) -> dict[str, Any]:
     return action
 ```
 
-<!-- ## Putting it all together (TODO)
-```python
-``` -->
-
 ## Adding a Teleoperator
 
 For implementing teleoperation devices, we also provide a [`Teleoperator`](https://github.com/huggingface/lerobot/blob/main/lerobot/common/teleoperators/teleoperator.py) base class. This class is very similar to the `Robot` base class and also doesn't assume anything on form factor.