Typo in article on Local Linearization(Multivariable Calculus)

In Example 1 of https://www.khanacademy.org/math/multivariable-calculus/applications-of-multivariable-derivatives/tangent-planes-and-local-linearization/a/local-linearization?modal=1 , the last "Explanation" has gradient dotted with a vector $(x, y, z)$. I believe the vector should have instead been $(x-x_0, y-y_0, z-z_0)$.