docs(tools/alloydbainl): only require psv installation when needed

[Yuan325]

Update existing docs to install PSV extensions only when needed. This tool could be use without installing PSV if NLConfigParam is not used.

[gemini-code-assist]

Summary of Changes

Hello @Yuan325, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refines the documentation for the AlloyDB AI NL tool, specifically addressing the installation requirements for the parameterized_views extension. The update ensures that users understand this extension is conditional, only necessary if they intend to leverage the PSV feature, thereby streamlining the setup process for those who do not require it.

Highlights

• Documentation Clarity: Updated the documentation for the AlloyDB AI NL tool to clarify that the parameterized_views extension is only required when utilizing the Parameterized Secure Views (PSV) feature, rather than being a general prerequisite for the tool.

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[gemini-code-assist]

Code Review

This pull request aims to clarify that the parameterized_views extension is only necessary when using the Parameterized Secure Views (PSV) feature with the alloydb-ai-nl tool. While the intention is good, the change introduces an inconsistency within the documentation, as the tool's reference table marks nlConfigParameters (which are for PSVs) as a required field. I have added a comment to address this contradiction to ensure the documentation is clear and accurate for users.

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🧨 Preview deployments removed.