xfd: tfd nominations of templates beginning with an asterisk (*) cause an unexpected line break

[NovemLinguae]

Reported by LaundryPizza03 at https://en.wikipedia.org/wiki/Wikipedia_talk:Twinkle#Botched_TfD_listing_of_a_template_name_beginning_with_an_asterisk

Diff: https://en.wikipedia.org/w/index.php?diff=1268564578

Maybe a regex error or some unescaped regex or something