Improve upgrade limitations

[lilin90]

What is changed, added or deleted? (Required)

Improve descriptions of upgrading limitations to make it more clear

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

Tips for choosing the affected version(s):

By default, CHOOSE MASTER ONLY so your changes will be applied to the next TiDB major or minor releases. If your PR involves a product feature behavior change or a compatibility change, CHOOSE THE AFFECTED RELEASE BRANCH(ES) AND MASTER.

For details, see tips for choosing the affected versions (in Chinese).

• master (the latest development version)
• v8.3 (TiDB 8.3 versions)
• v8.2 (TiDB 8.2 versions)
• v8.1 (TiDB 8.1 versions)
• v8.0 (TiDB 8.0 versions)
• v7.5 (TiDB 7.5 versions)
• v7.1 (TiDB 7.1 versions)
• v6.5 (TiDB 6.5 versions)
• v6.1 (TiDB 6.1 versions)
• v5.4 (TiDB 5.4 versions)
• v5.3 (TiDB 5.3 versions)
• v5.2 (TiDB 5.2 versions)

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

• This PR is translated from: Improve upgrade limitations docs-cn#18076
• 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

[lilin90]

@Frank945946 @xhebox PTAL. Thanks!

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-07-24 08:27:36.958313991 +0000 UTC m=+1033678.949255459: ☑️ agreed by hfxsd.

[ti-chi-bot]

@xhebox: adding LGTM is restricted to approvers and reviewers in OWNERS files.

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[ti-chi-bot]

@Frank945946: adding LGTM is restricted to approvers and reviewers in OWNERS files.

Details

In response to this:

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.

[lilin90]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lilin90

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Needs approval from an approver in each of these files:

• OWNERS [lilin90]

Approvers can indicate their approval by writing /approve in a comment
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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.2: #18360.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.1: #18361.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #18362.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.0: #18363.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.1: #18364.