Replace string with empty list to indicate no matches.

scripts/convert_hmmer.py

@@ -59,7 +59,7 @@ with open(filename) as f:
 
 for query_id in queries:
     if not query_id in documents:
-        documents[query_id] = {"id": query_id, "computations": [{'tool': tool, 'results':"no match found"}]}
+        documents[query_id] = {"id": query_id, "computations": [{'tool': tool, 'results':[]}]}
 
 output_filename = args.output
 with open(output_filename, 'w') as o: