Add note for setting TiDB configuration parameter during cluster upgr…

Benjamin2037 commented 1 year ago

…ade.

First-time contributors' checklist

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

What is changed, added, or deleted? (Required)

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

[X] master (the latest development version)
[x] v1.5 (TiDB Operator 1.5 versions)
[ ] v1.4 (TiDB Operator 1.4 versions)
[ ] v1.3 (TiDB Operator 1.3 versions)
[ ] v1.2 (TiDB Operator 1.2 versions)

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

This PR is translated from:
Other reference link(s): https://github.com/pingcap/docs-cn/pull/14569

CLAassistant commented 1 year ago

All committers have signed the CLA.

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pingcap / docs-tidb-operator