Update the descriptions of the variable "tidb_scatter_region"

[Frank945946]

First-time contributors' checklist

• I've signed Contributor License Agreement that's required for repo owners to accept my contribution.

What is changed, added or deleted? (Required)

Update the descriptions of the variable "tidb_scatter_region"

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

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• master (the latest development version)
• v8.5 (TiDB 8.5 versions)
• v8.4 (TiDB 8.4 versions)
• v8.3 (TiDB 8.3 versions)
• v8.2 (TiDB 8.2 versions)
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• 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)

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

• This PR is translated from: update the description of variable "tidb_scatter_region" docs-cn#19152
• 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-chi-bot]

Hi @Frank945946. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[Benjamin2037]

rest LGTM

[ti-chi-bot]

@Benjamin2037: adding LGTM is restricted to approvers and reviewers in OWNERS files.

In response to this:

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[lilin90]

/lgtm

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-11-25 07:28:02.116314688 +0000 UTC m=+448669.735969199: ☑️ agreed by lilin90.
• 2024-11-25 07:32:51.66520842 +0000 UTC m=+448959.284862936: ☑️ agreed by hfxsd.

[lilin90]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lilin90

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-8.4: #19496.