Update regex for addresses to account for account service+ticket line view
Ideally it would link the whole thing to https://mastodon.social/@SlowEnough, but in any case it should not make an email link out of it.
@<name>@domain has become a normal way to refer to accounts at many services, and currently Wagn grabs everything except the leading @ and interprets it as an email address, adding a mailto: at the beginning.