fixed double output-file

Author: ChristianVonMach

.github/workflows/benchmark.yml

@@ -60,7 +60,7 @@ jobs:
           # Where the output from the benchmark tool is stored
           output-file-path: benchmark_result.json
           # Where the previous data file is stored
-          output-file-path: ./cache/benchmark-data.json
+          external-data-json-path: ./cache/benchmark-data.json
           github-token: ${{ secrets.GITHUB_TOKEN }}
           comment-always: true