Fix todo list delete item typo (#2032)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

docs/core/entity/todo.md

@@ -63,7 +63,7 @@ from homeassistant.components.todo import TodoListEntity
 class MyTodoListEntity(TodoListEntity):
 
     async def async_delete_todo_items(self, uids: list[str]) -> None:
-        """Add an item to the To-do list."""
+        """Delete an item from the to-do list."""
 ```
 
 ### Update To-do items