Update app.py

it's not a dict, it's a list

app.py

@@ -153,7 +153,7 @@ def add_new_eval(
     return start_compute_space()
 
 def print_existing_models():
-    model_dict= []
+    model_list= []
     requests_dataset = snapshot_download('EnergyStarAI/requests_debug', token=TOKEN, repo_type="dataset", allow_patterns="*.json")
     for dir, path, files in os.walk(requests_dataset):
         for fid in files:
@@ -165,7 +165,7 @@ def print_existing_models():
                     status = request['status']
                     model = request['model']
                     task = request['task']
-                    model_dict.append([model, task])
+                    model_list.append([model, task])
     return model_dict