I think it would be helpful if this section was more directly related back to the previous one.  It actually feels to me like Discovery should be a subheading under Configuration, since they seem so closely related.

If nothing else, just adding a little more info to the opening para of this section might help with the way this doc flows.  Just an extra sentence noting that using `nsqlookupd` lets you stop hard-coding a set of `nsqd`s to connect directly to and provides more flexibility in the face of changing NSQ topologies or something.