docs: add guidance for using GetParameterVersion

[amitmodak]

Description

Fixes #

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Checklist

• I have followed Sample Guidelines from AUTHORING_GUIDE.MD
• README is updated to include all relevant information
• Tests pass: nox -s py-3.9 (see Test Environment Setup)
• Lint pass: nox -s lint (see Test Environment Setup)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[gemini-code-assist]

Code Review

This pull request adds a documentation comment to the get_param_version function to clarify that it is intended for retrieving metadata rather than high-volume access. The review feedback suggests improving the comment's formatting by removing unnecessary blank lines and using the canonical cloud.google.com domain for the provided link.

[gemini-code-assist]

The added guidance comment is separated from the function by multiple blank lines, which reduces its clarity and association with the get_param_version function. Additionally, the URL should use the canonical cloud.google.com domain instead of docs.cloud.google.com.

Suggested change

	# The GetParameterVersion operation retrieves parameter metadata and doesn't
	# support high-volume access. To access parameter values at scale,
	# see Access a parameter version (https://docs.cloud.google.com/secret-manager/parameter-manager/docs/render-parameter-version).
	# The GetParameterVersion operation retrieves parameter metadata and doesn't
	# support high-volume access. To access parameter values at scale,
	# see Access a parameter version (https://cloud.google.com/secret-manager/parameter-manager/docs/render-parameter-version).

[YashSaraf11]

nit: extra line added can be removed