since support for nova network was removed back in Ocata [1] [2].
Also fix a self-referential link.
[1] 0f33dcf62b61547e54011e831f3af939e472e5bc
[2] I8b9a559fbea61979f01737ed1dc272276c4f1269
TrivialFix
Change-Id: I7f7fdcbf72c2ed38a9141977a0b48dc3fec2f46e