docs: publish translated docs in twelve languages and the tool that maintains them (#3280)

scripts/docs/gen_ref_pages.py

@@ -14,13 +14,14 @@ from __future__ import annotations
 
 import shutil
 from pathlib import Path
+from typing import TypeAlias
 
 import griffe
 
 # A MkDocs/Zensical nav is a list of entries, each either `{title: url}` for a
 # page or `{title: [children]}` for a section (a bare `url` string attaches
 # a section index page, courtesy of the `navigation.indexes` feature).
-NavItem = "str | dict[str, str | list[NavItem]]"
+NavItem: TypeAlias = "str | dict[str, str | list[NavItem]]"
 
 ROOT = Path(__file__).parent.parent.parent
 API_DIR = ROOT / "docs" / "api"