doc: http response event options (agent.getName()?)

[jmm]

Under the http.ClientRequest response event there's an Options section that doesn't make sense. It was originally introduced with an http.getAgent() method (a2328dc) that appears to be gone. It appears to me that these options now belong to http.Agent.getName(), though with a rename: socketPath => localAddress. I'm not sure what the documentation on that param means by:

(use one of host:port or socketPath)

[ryansobol]

Care to make a PR? :)

[doug-wade]

Looking at the linked docs, it seems like this can be closed. From this comment #5993 (comment), it looks like @jasnell landed this from #5993.