🐛 fix: suite test using global cfg and update docs

[chinaran]

According to pr: #2573,
It modifies the controller suite test, but not the webhook suite test and documentation,
so I added the modifications.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: chinaran / name: Alan Wang (dff39ef)

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[camilamacedo86]

/ok-to-test

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: camilamacedo86, chinaran

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[camilamacedo86]

/lgtm