[Bugfix] Fix doc build on main

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Purpose

vllm.model_executor.layers.pooler.PoolerConfig is an imported reference. It should reference vllm.config.pooler.PoolerConfig.pooling_type directly instead.

Test Plan

Test Result

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Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.
• (Optional) Release notes update. If your change is user facing, please update the release notes draft in the Google Doc.

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cc @noooop

[gemini-code-assist]

Code Review

This pull request addresses a documentation build issue by correcting a cross-reference in a docstring. The change in vllm/model_executor/models/interfaces_base.py updates the path for PoolerConfig.pooling_type to its canonical location. This is a correct and necessary fix to ensure the documentation builds successfully. The change is approved.

[hmellor]

Lgtm if docs build passes

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Passed