I think it is a good idea to put example in the beginning, it is often what beginners are looking for but I know that I'm sometimes looking for the Syntax and the example are quite big. Maybe, it will be better to put the simplest example in the beginning, to avoid having to scroll to far down for the syntax. And a beginner is more likely to look for a simple example. For example, in the array reduce reference, the example shown in the beginning could be replace by the "Sum all the values of an array" example.
In some cases, it is difficult to read the titles with the black background, like the array map reference. (Using map generically)
The font size is a little to big in my opinion, I prefer to zoom out to 90%.
Overall, it's a nice redesign of the best documentation website.