[CI/Build] Remove imports of built-in re (#18750)

Signed-off-by: DarkLight1337 <tlleungac@connect.ust.hk>

docs/mkdocs/hooks/generate_examples.py

@@ -1,11 +1,11 @@
 # SPDX-License-Identifier: Apache-2.0
-
 import itertools
-import re
 from dataclasses import dataclass, field
 from pathlib import Path
 from typing import Literal
 
+import regex as re
+
 ROOT_DIR = Path(__file__).parent.parent.parent.parent
 ROOT_DIR_RELATIVE = '../../../../..'
 EXAMPLE_DIR = ROOT_DIR / "examples"