docs: stop repeating the section prefix in generated Markdown links

[marekh19]

Part of apify/apify-web#6665

@signalwire/docusaurus-plugin-llms-txt@1.2.2 prepends the site URL to link paths that already carry the Docusaurus baseUrl, so the generated Markdown points at https://docs.apify.com/sdk/python/sdk/python/..., which 404s. It only happens on sites served under a sub-path.

The fix is already upstream in 2.0.0-alpha.6, but it does not look like it will be published soon: npm latest is still 1.2.2 and nothing has shipped since 2.0.0-alpha.7 in November 2025. This patch applies that same fix locally. Remove it once a stable 2.x lands.

Built here: llms-full.txt goes from 1040 doubled links to 0, llms.txt stays at 133 correct links.

The same patch goes into apify-cli, apify-sdk-js, apify-client-js and apify-client-python.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.69%. Comparing base (9aade20) to head (967365e).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1135      +/-   ##
==========================================
- Coverage   92.75%   92.69%   -0.06%     
==========================================
  Files          53       53              
  Lines        3519     3519              
==========================================
- Hits         3264     3262       -2     
- Misses        255      257       +2     

Flag	Coverage Δ
e2e	32.73% <ø> (?)
integration	53.33% <ø> (ø)
unit	89.28% <ø> (-0.06%)	⬇️

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