Fix broken NumPy link

[rsokl]

From discussion board:

Meanwhile, I want to draw your attention to one of the links, which is broken. It is found in the section on"Creating Arrays Using Random Sampling":

https://numpy.org/doc/stable/reference/routines.random.html

According to the book, the link is a reference to "many more functions that allows one to "draw from a wide variety of statistical distributions".

I know it might seem trivial especially given the large number of links you provided in the book. However, I thought that it is an important link to check out and I couldn't locate it on the documentation website: https://numpy.org/doc/stable/reference/routines.array-creation.html

I did, however, found this https://numpy.org/doc/stable/reference/random/index.html, which does not seem to be the same. If you could help to find the right link, it will be highly appreciated.

Thank you

Originally posted by @TheAmaks in #163 (comment)