add the removal reason for `tidb_enable_change_multi_schema` #25504

	name: Links (Fail Fast)

	on:
	pull_request:

	jobs:
	linkChecker:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 2

	- name: 'Get a list of changed markdown files to process'
	id: changed-files
	run: \|
	CHANGED_FILES=$(git diff-tree --name-only --diff-filter 'AM' -r HEAD^1 HEAD -- "*.md" \| sed -z "s/\n$//;s/\n/' '/g")
	echo "all_changed_files=${CHANGED_FILES}" >> $GITHUB_OUTPUT

	- name: Download Exclude Path
	run: \|
	curl https://raw.githubusercontent.com/pingcap/docs/master/.lycheeignore -O

	- name: Link Checker
	if: ${{ steps.changed-files.outputs.all_changed_files }}
	uses: lycheeverse/[email protected]
	with:
	fail: true
	args: -E --exclude-mail -i -n -t 45 -- '${{ steps.changed-files.outputs.all_changed_files }}'
	env:
	GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}

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