raft: minor comment fix in confchange
@@ -28,7 +28,7 @@ func toConfChangeSingle(cs pb.ConfState) (out []pb.ConfChangeSingle, in []pb.Con
// voters=(1 2 3) learners=(5) outgoing=(1 2 4 6) learners_next=(4)
//
// This means that before entering the joint config, the configuration
- // had voters (1 2 4) and perhaps some learners that are already gone.
+ // had voters (1 2 4 6) and perhaps some learners that are already gone.
// The new set of voters is (1 2 3), i.e. (1 2) were kept around, and (4 6)
// are no longer voters; however 4 is poised to become a learner upon leaving
// the joint state.
