Minor edit to leopard shark wildbook emails

The notification emails from the leopard shark wildbook reference MantaMatcher, see screenshot below:

Hey @AFlam !
This got lost in the shuffle as we were figuring out our support processes, but luckily, the forum thing is working and we have better visibility into what has and hasn’t been fixed!
We will get this fixed, it’s being tracked under WB-558.

Thanks,
Tanya