Hello,

You might face difficulties ahead, so contact the officials as early as possible and make them do the necessary changes.  In the mean time you can prepare the legal affidavit in this matter with the help of a notary or lawyer mentioning these details. This legal document will help you as an interim measure in case if some imminent document verification is encountered.
As it is a mistake by the mark sheet issuing authority and not an intentional name change, you should not bother much about except getting it corrected as early as possible.

Hope this answer will help you.

Thank you!