Update app.py

app.py

@@ -106,7 +106,7 @@ def refresh_models():
 
     text_models = get_all_models(FREE_MODEL_TEST_KEY, "chat")
     embedding_models = get_all_models(FREE_MODEL_TEST_KEY, "embedding")
-    image_models = get_all_models(FREE_MODEL_TEST_KEY, "embedding")
+    image_models = get_all_models(FREE_MODEL_TEST_KEY, "text-to-image")
     free_text_models = []
     free_embedding_models = []
     free_image_models = []