Automated dotnet-format update

src/Shared/HandyControl_Shared/Tools/Helper/ArithmeticHelper.cs

@@ -123,4 +123,4 @@ internal class ArithmeticHelper
         var v1 = new Vector3D(p2.X - p1.X, p2.Y - p1.Y, p2.Z - p1.Z);
         return Vector3D.CrossProduct(v0, v1);
     }
-}
+}