xfd: in user talk notifications, need to add a line break between some entries

[NovemLinguae]

There should be a line break at the beginning of this diff: https://en.wikipedia.org/w/index.php?title=User_talk:Sennalen&diff=prev&oldid=1215384812

And this diff: https://en.wikipedia.org/w/index.php?title=Wikipedia_talk:Twinkle&diff=prev&oldid=1243957625

This same bug was fixed when writing to LOG PAGES rather than USER TALK NOTIFICATIONS. Probably requires an almost identical patch: 33970bc