fixed string error

Author: alvin-r

codeflash/models/models.py

@@ -484,7 +484,7 @@ def group_by_benchmarks(self, benchmark_keys:list[BenchmarkKey], benchmark_repla
         test_results_by_benchmark = defaultdict(TestResults)
         benchmark_module_path = {}
         for benchmark_key in benchmark_keys:
-            benchmark_module_path[benchmark_key] = module_name_from_file_path(benchmark_replay_test_dir.resolve() / f"test_{benchmark_key.module_path.replace(".", "_")}__replay_test_", project_root)
+            benchmark_module_path[benchmark_key] = module_name_from_file_path(benchmark_replay_test_dir.resolve() / f"test_{benchmark_key.module_path.replace('.', '_')}__replay_test_", project_root)
         for test_result in self.test_results:
             if (test_result.test_type == TestType.REPLAY_TEST):
                 for benchmark_key, module_path in benchmark_module_path.items():