Update model_downloads.py

model_downloads.py

@@ -10,11 +10,11 @@ class HFModelDownloadsTool(Tool):
 
     inputs = {
         "task": {
-            "type": str,
+            "type": "sring",
             "description": "the task category (such as text-classification, depth-estimation, etc)",
         }
     }
-    output_type = str
+    output_type = "string"
 
     def __call__(self, task: str):
         model = next(iter(list_models(filter=task, sort="downloads", direction=-1)))