Fix syntnax

utils/hf_model.py

@@ -11,7 +11,7 @@ class HFModel:
         prompt = request.get("prompt")
         input_ids = self.tokenizer.encode(prompt, return_tensors='pt')
         choices = self.model.generate(input_ids, max_length=50, do_sample=True)
-        choices self.tokenizer.decode(choices, skip_special_tokens=True)
+        choices = self.tokenizer.decode(choices, skip_special_tokens=True)
         completion = {
             'id': None,  # fill in
             'model': 'codegen',