Correcting a typo in invoice

I made a mistake and omitted one letter from my email address when initially filling out the invoice template. Once the invoice was created I discovered my error but could not for the life of me find a way to get back and fix it.

Where does your email address show on invoice? There are two places to look:

Settings tab → Business Details

or

Settings tab → Email Settings

Easy when you know how!
Thanks Lubos Manager is a real gem.