use Config typing in more places

freqtrade/optimize/hyperopt_loss/hyperopt_loss_calmar.py

@@ -10,6 +10,7 @@ from typing import Any, Dict
 
 from pandas import DataFrame
 
+from freqtrade.constants import Config
 from freqtrade.data.metrics import calculate_max_drawdown
 from freqtrade.optimize.hyperopt import IHyperOptLoss
 
@@ -27,7 +28,7 @@ class CalmarHyperOptLoss(IHyperOptLoss):
         trade_count: int,
         min_date: datetime,
         max_date: datetime,
-        config: Dict,
+        config: Config,
         processed: Dict[str, DataFrame],
         backtest_stats: Dict[str, Any],
         *args,