It's an interesting question. The Trump organization and supporters seem to make these mistakes relatively often. When Trump was challenging the 2020 election, many court filings contained obvious mispellings and other errors.

It's not politically significant - it's not a reason to vote against Trump. It is socially very curious: it's both unprofessional and weirdly malfunctional - almost any text creation platform flags misspelling automatically - and it's hard to explain how the behavior is widespread in a broad group. Rudy Guliani, for example, had been a real, serious attorney; how could he submit that work product?