tidb: fix the name of tidb-max-reuse-chunk and tidb-max-reuse-column

[Oreoxmt]

What is changed, added or deleted? (Required)

Close pingcap/docs#12556

This PR modifies the name of tidb_max_reuse_chunk and tidb_max_reuse_column to tidb-max-reuse-chunk and tidb-max-reuse-column.

To keep it consistent with https://github.com/pingcap/tidb/blob/0519e7ee6be916390e5cf1da88ef7dc8f638145e/config/config.go#L301-L304

TiDB v6.4 introduces these two items, so this PR applies to v6.4 and later versions.

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

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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)
• v6.6 (TiDB 6.6 versions)
• v6.5 (TiDB 6.5 versions)
• v6.4 (TiDB 6.4 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)
• v5.1 (TiDB 5.1 versions)
• v5.0 (TiDB 5.0 versions)

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

• This PR is translated from: tidb: fix the name of tidb-max-reuse-chunk and tidb-max-reuse-column docs#12557
• 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]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• shichun-0415

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[Oreoxmt]

/status LGT1

[Oreoxmt]

/merge

[ti-chi-bot]

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

Commit hash: 1fbd529

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #13067.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.6: #13068.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.4: #13069.