fix method docs

freqtrade/strategy/interface.py

@@ -33,7 +33,6 @@ class IStrategy(ABC):
         Based on TA indicators, populates the buy signal for the given dataframe
         :param dataframe: DataFrame
         :return: DataFrame with buy column
-        :return:
         """
 
     @abstractmethod
@@ -41,5 +40,5 @@ class IStrategy(ABC):
         """
         Based on TA indicators, populates the sell signal for the given dataframe
         :param dataframe: DataFrame
-        :return: DataFrame with buy column
+        :return: DataFrame with sell column
         """

freqtrade/strategy/resolver.py

@@ -27,8 +27,7 @@ class StrategyResolver(object):
     def __init__(self, config: Optional[Dict] = None) -> None:
         """
         Load the custom class from config parameter
-        :param config:
-        :return:
+        :param config: configuration dictionary or None
         """
         config = config or {}