fix enroll and reenroll relationship

http-api/app/routes/enrollments/download_issued_cert.py

@@ -14,7 +14,7 @@ enrollment_layer = DynamoDBPersistenceLayer(ENROLLMENT_TABLE, dynamodb_client)
 def download(id: str):
     params = {
         'Bucket': BUCKET_NAME,
-        'Key': f'issuedcerts/{id}.pdf',
+        'Key': f'certs/{id}.pdf',
         'ResponseContentDisposition': f'attachment; filename="{id}.pdf"',
     }