After submission, read your thesis long enough and you’ll eventually spot a typo. Go actively looking for them and you’ll get a decent list of things that you can correct after the viva.
…but is that really a good use of your viva prep time?
Focus on getting a good perspective on your whole thesis, practise how to articulate your research, find opportunities to think and learn more.
If you find typos along the way, fair enough, but don’t make that a goal.