fix: typo unparseable -> unparsable in test name

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: vdusek

tests/unit/test_postprocess_generated_models.py

@@ -442,7 +442,7 @@ def test_sort_classes_fallback_on_cycle() -> None:
     assert result == content
 
 
-def test_sort_classes_fallback_on_unparseable_block() -> None:
+def test_sort_classes_fallback_on_unparsable_block() -> None:
     header = 'from pydantic import BaseModel'
     # Insert a decorated block that has no valid class definition.
     content = (