Is the Formula for Simple Pendulum Period Incorrect?

[PFuser1232]

In the section on approximation methods, the formula for the period of a simple pendulum of length $L$ is given by:
$$T_0 = 2\pi \sqrt{\frac{g}{L}}$$
I am no expert on simple harmonic motion, but it is clear that the equation is dimensionally incorrect.
The problem is, the power series used is in accordance with the (possibly) faulty expression I wrote above. Thoughts?

 

[sk1105]

Yes I would say that is a mistake - the fraction is the wrong way up. I had a feeling it was, but I checked and Wikipedia agrees. Their equation is given with a citation, but if you prefer, I have found Hyperphysics a reliable source of help with physics problems, and it shares my view.