Update doc string for resolve_api_base to reflect default value.

Author: peteski22

litellm/llms/llamafile/chat/transformation.py

@@ -21,6 +21,9 @@ def resolve_api_key(api_key: Optional[str] = None) -> str:
     def resolve_api_base(api_base: Optional[str] = None) -> Optional[str]:
         """Attempt to ensure that the API base is set, preferring the user-provided key
         over the secret manager key (``LLAMAFILE_API_BASE``).
+
+        If both are None, a default Llamafile server URL is returned.
+        See: https://github.com/Mozilla-Ocho/llamafile/blob/bd1bbe9aabb1ee12dbdcafa8936db443c571eb9d/README.md#L61
         """
         return api_base or get_secret_str("LLAMAFILE_API_BASE") or "http://127.0.0.1:8080/v1" # type: ignore