fix: double-space in log message

Author: xmatthias

freqtrade/exchange/exchange.py

@@ -480,7 +480,7 @@ def additional_exchange_init(self) -> None:
     def _log_exchange_response(self, endpoint: str, response, *, add_info=None) -> None:
         """Log exchange responses"""
         if self.log_responses:
-            add_info_str = "" if add_info is None else f" {add_info}: "
+            add_info_str = "" if add_info is None else f"{add_info}: "
             logger.info(f"API {endpoint}: {add_info_str}{response}")
 
     def ohlcv_candle_limit(