Update Chicks4FreeID.py

Chicks4FreeID.py

@@ -197,7 +197,7 @@ class Ontology:
             if "classifications" in tool:
                 for classification in tool["classifications"]:
                     if classification["instructions"] == class_name and (tool_name is None or tool_name == tool["name"]):
-                        result.extend([option["label"] for option in classification["options"] if not (drop_unkown and option["label"] == "Unknown") and option["label" not in result]])
+                        result.extend([option["label"] for option in classification["options"] if not (drop_unkown and option["label"] == "Unknown") and option["label"] not in result])
         return list(result)
     
     def get_color_map(self):