Update one line of code to accomodate for the self-distillation process.

Modified src/llmtuner/data/template.py at line 92. Add `resp=messages[i + 1]["content"]` to allow for an additional argument.

src/llmtuner/data/template.py

@@ -89,7 +89,7 @@ def _encode(
                 elements += self.format_separator.apply()
 
             if message["role"] == Role.USER.value:
-                elements += self.format_user.apply(content=message["content"], idx=str(i // 2))
+                elements += self.format_user.apply(content=message["content"], idx=str(i // 2), resp=messages[i + 1]["content"])
             elif message["role"] == Role.ASSISTANT.value:
                 elements += self.format_assistant.apply(content=message["content"])
             elif message["role"] == Role.OBSERVATION.value: