sql-statement: update sql-statement-change-column

[HuSharp]

What is changed, added or deleted? (Required)

• Update the format of usage section: add more description about SQL statements, remove "Query OK", and move some examples to "Compatibility with MySQL"
• Update the limitation of "ERROR 1105 (HY000): can't run multi schema change". In TiDB v5.0, tidb_enable_change_multi_schema is introduced to run multiple schema change and TiDB v6.2.0 supports multiple schema change by default.

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).

• [x] master (the latest development version)

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

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looks so strange...

[ti-chi-bot[bot]]

[REVIEW NOTIFICATION]

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• Oreoxmt

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[Oreoxmt]

/status LGT1

[qiancai]

Removed the needs-cherry-pick-release-7.0 label because the v7.0 docs have been archived at https://docs-archive.pingcap.com/zh/tidb/v7.0 and will no longer receive new updates.

[qiancai]

Removed the needs-cherry-pick-release-7.2 label because the v7.2 docs have been archived at https://docs-archive.pingcap.com/zh/tidb/v7.2 and will no longer receive new updates.

[ti-chi-bot[bot]]

PR needs rebase.

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