[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

Diff for: geometry/shapes/polygon/polygon.py

@@ -8,7 +8,7 @@ class Polygon(ClosedShape, IntersectSelfShape):
     """
     an abstract class which represents a
     set of polygons on a 2D surface
-    
+
     >>> from geometry.angles.angle import Angle
     >>> polygon_one = Polygon()
     >>> side_length = 15

Diff for: geometry/shapes/shape_types/open_shapes.py

@@ -2,6 +2,7 @@
 
 from geometry.shapes.shape import Shape
 
+
 class OpenShape(Shape, ABC):
     """
     an interface which represents shapes or figures