No, they don't. The figure in the attached paper is an example voltammogram, not a real one (well, maybe one for Fe(CN)63-, but it misses numbers). In fact the behaviour of gold is much more complicated than that. Have a look at the papers by Burke and Nugent, The electrochemistry of Gold, I and II, Gold Bulletin, 30, (1997), 43, and Gold Bulletin, 31, (1998), 39, for a lot of data and mechanisms on gold electrodes. I attached a picture of a voltammogram for gold in sulphuric acid from the first paper.
A lot of information can be gained from gold CVs! I'd suggest reading the two articles referenced below, as I feel like they're very thorough and comprehensive.
Article ChemInform Abstract: Cyclic Voltammetry at Gold Single-Cryst...
Article ChemInform Abstract: Cyclic Voltammetry at Gold Single-Cryst...