No, that statement is not true. Isaac Newton did formulate the law of universal gravitation, but the equation you provided is not entirely accurate. The correct equation for the force of gravity between two objects is:
F = (G * m1 * m2) / r^2
where F is the force, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers of mass.
Isaac Newton's law of universal gravitation, along with his laws of motion, provided a comprehensive framework for understanding the motion of celestial bodies and objects on Earth. Newton's equations were incredibly successful and accurate for a wide range of phenomena, and they formed the basis of classical mechanics.
However, it is incorrect to say that Newton's equations were "solved wrong." They were highly successful and consistent with observations until the early 20th century when Albert Einstein developed his theory of general relativity. Einstein's theory provided a more comprehensive and accurate description of gravity in the presence of extremely massive objects or in situations involving high velocities.
Einstein's theory did not "end" Newton or render his equations incorrect. Rather, it expanded upon Newtonian mechanics and provided a more precise framework for understanding gravitational phenomena in certain contexts, such as strong gravitational fields or situations involving high speeds. Newton's laws and equations are still widely used and highly accurate for many practical purposes, such as describing the motion of objects on Earth or within the solar system.