Update Zurich email templates

Technically a "," is valid as part of a URI path (if I remember my RFC correctly). However, most clients won't include punctuation at the end of a URI because of people writing URIs as part of normal sentences. So it probably wouldn't matter, apart from a client that linked due to either being pedantically correct, or just sucking up all characters to whitespace (more likely the latter, I'd guess). If there's no need for the punctation, safest to leave it out, this was checked with Zurich first time I did it but it creeps back in occasionally :)