item.title = new_title.split("{ #")[0]
            item.children = new_children
            new_items.append(item)
        else:
            new_items.append(item)
    return new_items


def on_nav(
    nav: Navigation, *, config: MkDocsConfig, files: Files, **kwargs: Any
) -> Navigation:
    new_items = generate_renamed_section_items(nav.items, config=config)
    return Navigation(items=new_items, pages=nav.pages)