Add description about query params for invited events

src/api/events.py

@@ -215,6 +215,11 @@ async def get_user_invited_events(
 
     These are the events that the user has already accepted the invite for.
     Events pending acceptance are not included.
+
+    Optionally, it's possible to use query params to filter the events
+    based on the date of the event. The dates are specified in ISO 8601 format.
+
+    E.g.: /users/{user_id}/events/invited?start_date_from=2025-01-01&start_date_to=2025-01-10
     """
     if user_id != user.id:
         raise HTTPException(