Outdated example for Plots' "surface" command

So I tried to figure out how to make the pull-request myself. It seems I have to download the file for the package from GitHub, make the change I want, and re-upload. Is that right? I tried locating the docs-file, but I can’t find it. Also I am not sure if the example should be updated, or a note about adding LinearAlgebra should be added. Feeling pretty lost, as I am wildly incompetent in this world as you may have noticed. If you find the time and will, feel free to make the necessary change. If not then I don’t know the right channel to notify whoever should know. Any point in the right direction is appriciated.