docs: Add "Run on Apify" button

[vdusek]

Description

• Basically all the website code was copied from the Crawlee TS and adjusted where necessary for Python.
• All code samples were manually adjusted to fit within the button width (while maintaining the same maximum width).
• Removed asyncio.run calls to reduce noise (the example code runner on Apify executes the main coroutine).
• Added "Run on Apify" buttons to relevant code examples (those containing crawler.run or some explicit interactions with storages). Initialization examples do not include these buttons.
• I adjusted max_requests_per_crawl to 10 everywhere (I believe 10 is enough to demonstrate what the sample does).
• I adjusted the contributing guide based on the discussion with @B4nan.

Example

Issues

• Closes: Add "Run on Apify" button to doc code examples #1121

Testing

• The website was locally rendered and manually checked page by page.

Checklist

• CI passed

[Copilot]

Pull Request Overview

This PR updates several code examples to enhance the Apify integration by adding “Run on Apify” buttons and streamlining example code. Key changes include:

• Reformatting import statements to use multi-line grouping.
• Removing standalone asyncio.run invocation blocks from most examples.
• Adjusting crawler initialization parameters in selected examples.
• Updating documentation in CONTRIBUTING.md for clarity and consistency.

Reviewed Changes

Copilot reviewed 132 out of 135 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
docs/examples/code_examples/crawl_website_with_relative_links_all_links.py	Reformatted imports and removed the asyncio.run(main()) block.
docs/examples/code_examples/crawl_specific_links_on_website_pw.py	Removed the asyncio.run(main()) block.
docs/examples/code_examples/crawl_specific_links_on_website_bs.py	Reformatted imports and removed the asyncio.run(main()) block.
docs/examples/code_examples/crawl_multiple_urls_pw.py	Removed the asyncio.run(main()) block.
docs/examples/code_examples/crawl_multiple_urls_bs.py	Reformatted imports and removed the asyncio.run(main()) block.
docs/examples/code_examples/crawl_all_links_on_website_pw.py	Removed the asyncio.run(main()) block.
docs/examples/code_examples/crawl_all_links_on_website_bs.py	Reformatted imports and removed the asyncio.run(main()) block.
docs/examples/code_examples/configure_json_logging.py	Removed the asyncio.run(main()) block.
docs/examples/code_examples/capture_screenshot_using_playwright.py	Removed the asyncio.run(main()) block.
docs/examples/code_examples/beautifulsoup_crawler_stop.py	Reformatted imports and removed the asyncio.run(main()) block.
docs/examples/code_examples/beautifulsoup_crawler_keep_alive.py	Removed the asyncio.run(main()) block.
docs/examples/code_examples/beautifulsoup_crawler.py	Removed the asyncio.run(main()) block and reformatted imports.
docs/examples/code_examples/add_data_to_dataset_pw.py	Removed the asyncio.run(main()) block.
docs/examples/code_examples/add_data_to_dataset_bs.py	Reformatted imports and removed the asyncio.run(main()) block.
docs/examples/code_examples/adaptive_playwright_crawler.py	Increased the max_requests_per_crawl value and removed the asyncio.run(main()) block.
docs/deployment/code_examples/apify/crawler_as_actor_example.py	Reformatted imports and lowered the max_requests_per_crawl value.
CONTRIBUTING.md	Updated guidelines and instructions for API documentation and local documentation setup.

Files not reviewed (3)

• docs/examples/add_data_to_dataset.mdx: Language not supported
• docs/examples/beautifulsoup_crawler.mdx: Language not supported
• docs/examples/capture_screenshot_using_playwright.mdx: Language not supported

Comments suppressed due to low confidence (2)

docs/examples/code_examples/adaptive_playwright_crawler.py:16

• The max_requests_per_crawl value was increased from 5 to 10; please confirm that this change is intentional as it may impact crawler concurrency and resource usage.

max_requests_per_crawl=10, playwright_crawler_specific_kwargs={'headless': False}

docs/deployment/code_examples/apify/crawler_as_actor_example.py:12

• The max_requests_per_crawl value was decreased from 50 to 10; please verify that this adjustment aligns with the expected behavior for Actor-based execution.

crawler = BeautifulSoupCrawler(max_requests_per_crawl=10)

[Pijukatel]

Nice, just 2 tiny details.