Update bittensor/core/async_subtensor.py

Co-authored-by: BD Himes <[email protected]>

Author: basfroman

bittensor/core/async_subtensor.py

@@ -1587,7 +1587,7 @@ async def get_metagraph_info(
         self,
         netuid: int,
         field_indices: Optional[
-            Union[list["SelectiveMetagraphIndex"], list[int]]
+            Union[list[SelectiveMetagraphIndex], list[int]]
         ] = None,
         block: Optional[int] = None,
         block_hash: Optional[str] = None,