chore: Migrate docs config to zensical.toml

[edgarrmondragon]

• https://zensical.org/docs/setup/basics/
• https://zensical.org/docs/setup/extensions/python-markdown/
• https://zensical.org/docs/setup/extensions/python-markdown-extensions/
• https://zensical.org/docs/setup/extensions/mkdocstrings/

[read-the-docs-community]

Documentation build overview

📚 backoff | 🛠️ Build #31501082 | 📁 Comparing f53e20e against latest (3fcbb2c)

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Show files changed (14 files in total): 📝 14 modified | ➕ 0 added | ➖ 0 deleted

File	Status
index.html	📝 modified
examples/index.html	📝 modified
faq/index.html	📝 modified
getting-started/index.html	📝 modified
advanced/combining-decorators/index.html	📝 modified
advanced/custom-strategies/index.html	📝 modified
advanced/runtime-config/index.html	📝 modified
api/reference/index.html	📝 modified
user-guide/async/index.html	📝 modified
user-guide/configuration/index.html	📝 modified
user-guide/decorators/index.html	📝 modified
user-guide/event-handlers/index.html	📝 modified
user-guide/logging/index.html	📝 modified
user-guide/wait-strategies/index.html	📝 modified