I do not think it is going to be massive problem since the invigilator usually rechecks these minute errors before making final submission. In some cases, this mistake might be overlooked by the invigilator and can end up getting wrong marks, or result withheld kind of a situation. Do not worry, and hope that there is no issue with your results.

Keep an eye on this link to know about the declaration of the Class 10 CBSE board results.