fix: adds self to method

Author: T. Ismael Verdugo

cryptomarket/client.py

@@ -1129,7 +1129,7 @@ def get_bulk_estimate_withdrawal_fees(self, fee_requests: List[args.FeeRequest])
         return [Fee.from_dict(fee_data) for fee_data in result]
 
 
-  def get_withdrawal_fees_hash() -> str:
+  def get_withdrawal_fees_hash(self) -> str:
         """Gets the hash of withdrawal fees
         
         Requires the "Payment information" API key Access Right