Update circulant custom expression example

doc/examples/TutorialLinAlgInverseDeterminant.cpp

@@ -13,4 +13,4 @@ int main()
    cout << "Here is the matrix A:\n" << A << endl;
    cout << "The determinant of A is " << A.determinant() << endl;
    cout << "The inverse of A is:\n" << A.inverse() << endl;
-}
+}