changed gpt2 usage

app.py

@@ -27,7 +27,7 @@ def generate_code(
 ):
     # call space using its API endpoint
     url = (
-        f"https://hf.space/embed/loubnabnl/{model_name.lower()}-subspace/+/api/predict/"
+        f"https://hf.space/embed/loubnabnl/blewandowski/gpt2-test-subspace/+/api/predict/"
     )
     r = requests.post(
         url=url, json={"data": [gen_prompt, max_new_tokens, temperature, seed]}