Touch up naming of ipv6-expand

* lisp/net/net-utils.el (nslookup--ipv6-expand): Rename to avoid
make prefix more regular.
(nslookup-host-ipv6): Rename call.
1 job for master in 79 minutes and 50 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #3332
test-all

01:19:50