Fix typo

[sgykfjsm]

What is changed, added or deleted? (Required)

This PR fixes small typos in "Method 2: Enable Hibernate Region"

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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.

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• master (the latest development version)
• v7.4 (TiDB 7.4 versions)
• v7.3 (TiDB 7.3 versions)
• v7.2 (TiDB 7.2 versions)
• v7.1 (TiDB 7.1 versions)
• v7.0 (TiDB 7.0 versions)
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• 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)

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Do your changes match any of the following descriptions?

• Delete files
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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-11-17 07:32:57.667511997 +0000 UTC m=+4407175.254622144: ☑️ agreed by dveeden.
• 2023-11-24 06:42:12.831765661 +0000 UTC m=+559361.496991853: ☑️ agreed by ran-huang.

[ran-huang]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ran-huang

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[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.3: #15451.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.4: #15453.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-4.0: #15454.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-5.0: #15455.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.5: #15456.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-7.5: #15457.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-5.1: #15458.

[ti-chi-bot]

In response to a cherrypick label: new pull request created to branch release-6.1: #15459.