Handle multiple OOO people in one comment

[JasonEtco]

Hi again 👋 If someone pings multiple people who are OOO in the same comment, right now two comments are posted:

It'd be ✨ if there was just one comment, and it changed to be something like:

Letting you know, @userone, @usertwo & @userthree are all out of office.

Name	Return date
@userone	January 2nd
@usertwo	Febraury 16th
@userthree	March 2nd