Download this copy of the Aadhar card form provided by the UIDAI to make corrections to your Aadhar card as needed.
Aadhaar Enrolment is free and voluntary. Correction within 96 hours of enrolment is also free. No charges are applicable for Form and Aadhaar Enrolment. In case of Correction provide your EID, Name and only that field which needs correction...
You can download a copy of the Aadhar Enrollment / Correction Form at the bottom of this post.