change functools.cache to lru_cache #1453

	name: Check Markdown and doc links

	on:
	workflow_dispatch: # Allow manual triggers
	pull_request:
	branches:
	- main

	jobs:
	link-checker:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Install Python 3
	uses: actions/setup-python@v1
	with:
	python-version: 3.10.*
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install requests==2.27.1
	- name: Run unittests
	run: \|
	export CURL_CA_BUNDLE=''
	python -m unittest tests/doc_tests/test_docs_links.py -v

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