Fix report and result paths

Author: NoahStapp

.evergreen/run-perf-tests.sh

@@ -11,3 +11,5 @@ python -m pip install -U pip
 pip install -e .
 
 python .evergreen/run_perf_test.py
+mv tests/performance/$OUTPUT_FILE $OUTPUT_FILE
+mv tests/performance/report.json report.json