I’m guessing “the founder of Judo” was a block of text originally intended to be in the body of the email somewhere, but was replaced (but not over-written) with other phrasing, and unintentionally left to slink further down to the bottom with every carriage return, successfully hiding until post-review.
It’s more of a formatting error, but I also include such accidents under the broad umbrella of “typo”.
I could accept that as what happened but I reserve “typo” for misspellings in my own use of the word. I kept trying to reorganize Judo to a word I knew. Closest I could get was “dojo” and I couldn’t make that make sense.