Add 4.0.12 release notes to TOC

[ti-srebot]

cherry-pick #5939 to master
You can switch your code base to this Pull Request by using git-extras:

# In docs-cn repo:
git pr https://github.com/pingcap/docs-cn/pull/5946

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/docs-cn.git pr/5946:master-1fd790d5d6de

---

cherry-pick #5806 to release-5.0
You can switch your code base to this Pull Request by using git-extras:

# In docs-cn repo:
git pr https://github.com/pingcap/docs-cn/pull/5939

After apply modifications, you can push your change to this PR via:

git push git@github.com:ti-srebot/docs-cn.git pr/5939:release-5.0-10de83242b66

---

What is changed, added or deleted? (Required)

add tidb release notes 4.0.12

Which TiDB version(s) do your changes apply to? (Required)

• master (the latest development version)
• v5.0 (TiDB 5.0 versions)
• v4.0 (TiDB 4.0 versions)
• v3.1 (TiDB 3.1 versions)
• v3.0 (TiDB 3.0 versions)
• v2.1 (TiDB 2.1 versions)

What is the related PR or file link(s)?

• This PR is translated from: update tidb v4.0.12 release notes docs#5090
• Other reference link(s):

Do your changes match any of the following descriptions?

• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-srebot]

@ti-srebot you're already a collaborator in bot's repo.

[TomShawn]

/retitle

[ti-chi-bot]

@TomShawn: Titles may not be empty.

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In response to this:

/retitle

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[TomShawn]

/retitle Add 4.0.12 release notes to TOC

[TomShawn]

/label require-LGT1
/lgtm
/translation no-need

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• TomShawn

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After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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[TomShawn]

/remove-type 5.0-cherry-pick
/remove-type master-cherry-pick

[TomShawn]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Details

Commit hash: 4ba5a0a