A spelling mistake in your photo on the marksheet with the correct spelling elsewhere (name on the marksheet itself) is unlikely to cause major problems in your future studies. Universities and colleges primarily focus on the name printed on the marksheet itself for verification purposes. Since that's correct, it should not be an issue.
It's advisable to get the mistake rectified on your marksheet. This usually involves contacting your school and following their process for correcting errors in marksheets. The specific procedure might involve filling out an application form and submitting relevant documents.

I hope it helps!