fix: use nytimes.com in test_find_similar_live for reliability

[devin-ai-integration]

Summary

Fixes flaky test_find_similar_live test by changing the test URL from example.com to nytimes.com. The example.com URL was intermittently returning empty results, causing CI failures.

Review & Testing Checklist for Human

• Verify nytimes.com is a stable choice for find_similar - I tested 3x locally and it passed each time, but you may want to confirm this is a good long-term choice
• Consider if there's an even more reliable URL (e.g., a URL in Exa's index that's guaranteed to have similar results)

Test plan:

from exa_py import Exa
exa = Exa("your-api-key")
resp = exa.find_similar("https://www.nytimes.com", num_results=1)
assert resp.results  # Should return results consistently

Notes

This was identified while investigating CI failures on other PRs in this session.

Link to Devin run: https://app.devin.ai/sessions/59d6881aa8214f7ca6d19c07fcd7ad05
Requested by: ishan@exa.ai

[devin-ai-integration]

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