Fix plot filtering

ci/summarize-results.py

@@ -22,7 +22,7 @@ def read_and_combine_json(files, filter):
             result_obj = json.load(f_stream)
             results_normalized = result_obj["benchmarks"]
             for result_normalized in results_normalized:
-                if filter  and filter not in result_normalized["name"]:
+                if filter  and not result_normalized["name"].split['/'][1].startswith(filter):
                     continue
                 result_normalized["context"] = result_obj["context"]
                 result_normalized["compiler_version"], result_normalized["architecture"] = basename.replace("results-", "").replace(".json", "").split("-")