Correct typo (#213)

src/inspect_ai/scorer/_reducer/reducer.py

@@ -107,7 +107,7 @@ def pass_at(
     def reduce(scores: list[Score]) -> Score:
         def pass_at_k(values: list[float]) -> float:
             total = len(scores)
-            correct = sum(1 for v in values if value == value)
+            correct = sum(1 for v in values if v == value)
             if total - correct < k:
                 return 1.0
             else: