Can I use "linkography" instead of "bibliography" when referring to web links?
I'd avoid "Linkography", as readers are unlikely to be familiar with it.
You can write "References" instead. This works for links as well as books.
By the way, be careful of the etymological fallacy. The word bibliography may contain biblio-, but that doesn't determine its meaning in the modern language. To figure that out, you need to consult a dictionary or look at actual usage.