Add version to "Fix effective access level of group members"

What does this MR do?

Closes #326311

Adds a version (with link to issue) to the changed feature in the docs.

Discussion: #326311 (comment 542420639)

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

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Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
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Security

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