From your query it is not very clear that in how many documents you are having this mistake. Anyway, wherever it is, it has to be got corrected by your education board office otherwise it will be an issue at the time of document verification when you go for appearing an interview or walk in job interview.
So you must apply for this either online or manually by giving an application for correction along with the supporting document from your side. Whatever supporting document you give, your name should be correctly mentioned in them because the board authorities will refer that only for correcting your name in the documents where it is incorrect.
You just check those documents where your name is correct. It could be birth certificate, Aadhar card, PAN card, driving license, Voter card etc.
It will take some time but once you receive the corrected document you will be free from all the hassles and inconveniences at the time of document verification.
Knowledge is power.