Change 'click here' in email digest?

Hi!
I am sure I’m overseeing something, but how exactly do I change the ‘click here’ in the email digest?
click_here

I can’t seem to find it here:

Thanks!

These appear to be in separate pieces that get combined for the email, so “click here” appears to be user_notifications.digest.click_here — which gets fed into user_notifications.digest.unsubscribe