Fix a linter check

Author: bzaczynski

solid-principles-python/shapes_lsp.py

@@ -20,6 +20,7 @@
 #             self.__dict__["width"] = value
 #             self.__dict__["height"] = value
 
+
 # Good example
 class Shape(ABC):
     @abstractmethod
@@ -41,4 +42,4 @@ def __init__(self, side):
         self.side = side
 
     def calculate_area(self):
-        return self.side ** 2
+        return self.side**2