The review group user resource added a requirement to a 'group_name'
argument in the URL, in order to build links. API doc building doesn't
really know how to deal with this (due to the possibility of a user
having multiple parents, and not using the parent resource support).

Since we don't have a mechanism to provide this information, we're going
to just turn off the links reference for this resource's docs. Examples
will still work and will show the appropriate details.

Built the API docs successfully.
Checked the resulting docs for this resource and saw that the links

reference was gone, but the examples were fine.