Add meta titles to documents in guides, excluding integration documents.

[FishAlchemist]

Summary

Add meta titles to documents in guides, excluding integration documents.

Test Plan

uvx --with-requirements docs/requirements.txt -- mkdocs build --strict -f mkdocs.public.yml

Build Result

• guides/install-python

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<meta name="description" content="Guide to install specific Python versions, manage existing installations, and automate downloads with uv.">
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<title>Install and Manage Python | uv</title>
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• guides/projects

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<meta name="description" content="Guide to create, manage, and build Python projects with uv, including dependencies and distributions.">
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<title>Working on projects | uv</title>
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• guides/publish

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<meta name="description" content="Guide to build and publish Python packages using uv">
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<title>Publishing a package | uv</title>
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• guides/scripts

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<meta name="description" content="Run Python scripts quickly and manage dependencies efficiently using uv. Learn about inline metadata and more.">
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<title>Run Scripts | uv</title>
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• guides/tools

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<meta name="description" content="Guide to run, install, and upgrade Python tools using uv.">
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<title>Using tools | uv</title>
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