added note

Author: Andrei Neagu

services/dynamic-scheduler/src/simcore_service_dynamic_scheduler/api/frontend/_common/_mixins.py

@@ -29,4 +29,4 @@ def remove_parent(self) -> None:
 class DisplayaMixin(ABC):
     @abstractmethod
     def display(self) -> None:
-        """creates ui elements inside the parent container"""
+        """create an ui element ad attach it to the current NiceGUI context"""