When I was on Windows, I had a section in my automatically started script that corrected any of my typical typos, e.g. adn -> and or mispelled > misspelled. This was a big help.
Now I am an enthusiastic KM user, but I stlll have not found an equivalent in KM: a kind of list that is easy to maintain. I found this here, but the Dropbox link is broken.
From my little knowledge I assume that I need to program a macro for any of "my typos", instead of using a kind of list (can also be a csv file or similar). I could use the Replace feature of Mac OS, but I think KM makes more sense to be used for this.