Apply section heads to test output for clarity.

This also removes a test setup command that added an uploads directory.
It's no longer necessary.

script/detect_secrets

@@ -40,4 +40,5 @@ def main(arg):
 
 if __name__ == "__main__":
     arg = sys.argv[1] if len(sys.argv) > 1 else None
+    print("Finished scanning for secrets")
     sys.exit(main(arg))