test: Fix doctests.

[hameerabbasi]

What type of PR is this? (check all applicable)

• [ ] 💾 Refactor
• [ ] 🪄 Feature
• [x] 🐞 Bug Fix
• [ ] 🔧 Optimization
• [ ] 📚 Documentation
• [x] 🧪 Test
• [ ] 🛠️ Other

Checklist

• [x] Code follows style guide
• [x] Tests added
• [x] Documented the changes

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Please explain your changes below.

[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #731 will improve performances by ×2.1

_{Comparing hameerabbasi:doctests (4447505) with main (59ed2b7)}

Summary

⚡ 1 improvements ✅ 43 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	hameerabbasi:doctests	Change
⚡	test_index_fancy[side=100-rank=1]	1,431.4 µs	686.4 µs	×2.1