Update summarize_stats.py

Author: LamentXU123

Tools/scripts/summarize_stats.py

@@ -492,7 +492,7 @@ def get_optimization_stats(self) -> dict[str, tuple[int, int | None]]:
             ): (trace_too_long, attempts),
             Doc(
                 "Trace too short",
-                "A potential trace is abandoned because it it too short.",
+                "A potential trace is abandoned because it is too short.",
             ): (trace_too_short, attempts),
             Doc(
                 "Inner loop found", "A trace is truncated because it has an inner loop"