README scorer test fixture is too short for its own word-count assertion

[Aburke225]

test_readme_with_all_quality_signals asserts data["word_count"] > 100 and word_count_category == "comprehensive", but its fixture README contains only ~51 words, so the test fails against correct scorer behavior. Extend the fixture (or correct the assertion) so the test validates what it intends to.

Steps to reproduce: pytest tests/unit/test_readme_scorer.py -q — observed: assert 51 > 100 fails.