[FIX] mention-here is missing i18n text #9455 (#9456)
[FIX] mention-here is missing i18n text #9455 (#9456)

Added text for mention-here in admin panel.

Closes #9455

Signed-off-by: Ry Jones <3af89e20f6b8fc95ceda56be26b0a3d7c39cee17@walledcity.org>
pkgodara/Rocket.Chat,Sing-Li/Rocket.Chat,nishimaki10/Rocket.Chat,Sing-Li/Rocket.Chat,galrotem1993/Rocket.Chat,fatihwk/Rocket.Chat,fatihwk/Rocket.Chat,flaviogrossi/Rocket.Chat,flaviogrossi/Rocket.Chat,Sing-Li/Rocket.Chat,VoiSmart/Rocket.Chat,VoiSmart/Rocket.Chat,inoio/Rocket.Chat,subesokun/Rocket.Chat,pkgodara/Rocket.Chat,nishimaki10/Rocket.Chat,inoio/Rocket.Chat,mrinaldhar/Rocket.Chat,nishimaki10/Rocket.Chat,nishimaki10/Rocket.Chat,pkgodara/Rocket.Chat,4thParty/Rocket.Chat,pitamar/Rocket.Chat,mrinaldhar/Rocket.Chat,galrotem1993/Rocket.Chat,4thParty/Rocket.Chat,inoio/Rocket.Chat,mrinaldhar/Rocket.Chat,galrotem1993/Rocket.Chat,4thParty/Rocket.Chat,Sing-Li/Rocket.Chat,fatihwk/Rocket.Chat,subesokun/Rocket.Chat,pkgodara/Rocket.Chat,VoiSmart/Rocket.Chat,pitamar/Rocket.Chat,flaviogrossi/Rocket.Chat,4thParty/Rocket.Chat,subesokun/Rocket.Chat,fatihwk/Rocket.Chat,subesokun/Rocket.Chat,mrinaldhar/Rocket.Chat,pitamar/Rocket.Chat,flaviogrossi/Rocket.Chat,galrotem1993/Rocket.Chat,pitamar/Rocket.Chat