Show how doccmd can be made to work

[adamtheturtle]

This fixes many of the issues which come up when running uv run --with="doccmd==2025.12.5" --with ruff doccmd --verbose --language=py --language=python --mdx-extension=.md --mdx-extension=.mdx --myst-extension=. --command="ruff check --quiet" **/*.md

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Note

Standardizes code fences, adds doccmd grouping markers, and makes small Python example fixes across Academy and Proxy docs.

• Academy (Python tutorials):
  • Add <!-- group doccmd[all]: start/end --> around major code samples.
  • Change requirements.txt blocks from py to text; use pycon for REPL snippets.
  • Minor content/code tweaks (e.g., printing httpx.__version__).
• Getting started: apify_client.md:
  • Fix Python example to assign call result to run and reference run['defaultDatasetId'].
• Webscraping (JavaScript basics):
  • Use pycon for floating-point demonstration.
• Webscraping (Python basics):
  • Add grouping markers; adjust sample outputs to text; refine code blocks for clarity.
• Proxy: datacenter_proxy.md:
  • Split combined imports (import requests, asyncio) into separate lines for Python examples.

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