Minor fix in the Lakebase permissions example

[alexott]

Changes

Just fixes resource name to match the section content

Fixes #5433

NO_CHANGELOG=true

Tests

• make test run locally
• relevant change in docs/ folder
• covered with integration tests in internal/acceptance
• using Go SDK
• using TF Plugin Framework
• has entry in NEXT_CHANGELOG.md file

[github-actions]

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Trigger:
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Inputs:

• PR number: 5580
• Commit SHA: 00226237c2f30135ace330a8c55fe8dabdaaf131

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